We would like to express our thanks to all those listed below who have refereed papers in 2011. As papers are received from many different countries and on a wide variety of Operational Research topics we are heavily dependent on the specialist knowledge of our referees. Refereeing, when done thoroughly, puts a high demand on time, and we are aware that this time is precious. Many referees reviewed several papers and revisions of papers during the past year. Our continuing reputation as a strong international peer-reviewed journal relies much on these referees who give generously their time to provide reliable assessments of the submitted papers. The reports that they provide help the joint-editors, and guest editors of special issues, to form a judgement about the papers. The efforts of the referees are, as always, very much appreciated by both the editors and the authors who seek peer approval.
Prakash Abad
Jose H Ablanedo-Rosas
Jawad Abrache
Nabil Absi
K Achary
Fran Ackermann
Chris Adcock
Gajendra Adil
Veena Adlakha
Ali Reza Afshari
E Aghezzaf
A Agnetis
Darryl Keith Ahner
Ayse Akbalik
Can Akkan
Deniz Aksen
Selim M Akturk
Fawaz S Al-Anzi
SM Al-Yakoob
Kevin Albertson
Amie Renee Albrecht
Bahram Alidaee
Nezih Altay
IK Altinel
Sibel Alumur
J Fernando Alvarez
Ramon Alvarez-Valdes
Filipe Alvelos
Claudio Alves
C Amado
Kannapha Amaruchkul
Fatemeh Amini
Naoual Amrouche
Jardar Andersen
Kim Allen Andersen
Tobias Andersson
Francisco J Andre
Galina Andreeva
Lidia Angulo-Meza
Jake Ansell
Alonso Ayuso Antonio
Veronica Araoz
Necati Aras
Claudia Archetti
Nikos Argyris
Mohammad Waqar Ali Asad
Jalal Ashayeri
M Asmild
Ben Atkinson
Rudolf Avenhaus
Necmi Avkiran
Goker Aydin
Masri Ayob
Amir Azaron
Yaghoob Azizi
Mohamed Babai
Eugenia Babiloni
Bart Baesens
Monark Bag
Rose Baker
Nitin Bakshi
George Baltas
Mihai Banciu
Denise Bandeira
Jonathan F Bard
Marco Bardoscia
Digby Barker
Theresa Barker
Mike Barnes
Carlos Barros
Lisa Bartlett
Jonathan Barzilai
Preetam Basu
Michael Richard Bathe
Rajan Batta
Maria Battarra
Daria Battini
Pelin Bayindir
Majid Behzadian
Tolga Bektas
Peter Beling
Simon George Bell
Tony Bellotti
F Ben Abdelaziz
Stefano Benati
Peter Bennett
Patrizia Beraldi
Oded Berman
Will Bertrand
John Bessant
Patrick Beullens
Hans-Georg Beyer
Bogdan Bichescu
Christian Bierwirth
Marco Bijvank
Bilge Bilgen
Sun Bingzhen
Diane P Bischak
Dan Black
John Blake
JC Blanc
S Blancard
Fayez Boctor
John Boland
F Boran
Denis Borenstein
Tom Bowen
John Bowers
S Bozoki
Malcolm P Brady
Sally Brailsford
Walter Briec
Andrew Brint
John Brocklesby
Rob Broekmeulen
Roger Brooks
Cathal MacSwiney Brugha
Herwig Bruneel
Michael Brusco
Serol Bulkan
Thomas Burgess
Henry Thomas Burley
Karen Joanne Cairns
Daniel Oliveira Cajueiro
Metin Cakanyildirim
Ana S Camanho
Ann Campbell
Colin Campbell
José Ramón Cancelo de la Torre
Bülent Çatay
Clara Wen Cao
Chris Caplice
Massimiliano Caramia
Leopoldo Eduardo Cardenas-Barron
Salvador Casadesus Pursals
L Castelli
Dirk Cattrysse
Tugba Cayirli
Andrzej Ceglowski
Alberto Ceselli
Godfrey Chagwiza
Srinivas Chakravarthy
Hing Chan
Cheng-Chang Chang
Sohail Chaudhry
Satyaveer Chauhan
Chan Hou Che
Peter Checkland
Bo Chen
Chuen-Jyh Chen
H Chen
I-Shuo Chen
J-X Chen
Jen-Ming Chen
Lijian Chen
Ping Chen
Shih-Pin Chen
Shin-Guang Chen
Ting-Yu Chen
Yao Chen
Youhua Chen
Yu-Chuan Chen
Mingbao Cheng
TCE Cheng
L Cherchye
C Chiang
CI Chiang
F Chiclana
Timothy Charles Chippington Derrick
Maxwell Chipulu
Yuan-Shyi Peter Chiu
Yung-Ho Chiu
Huidae Cho
Richard Cho
Tsan-Ming Choi
Chengbin Chu
Xue-Ning Chu
Stefanka Chukova
Andy Chun
Kun-Jen Chung
Steve Clarke
Leandro Coelho
Yuval Cohen
Shirley Yvonne Coleman
Gurcan Comert
Domenico Conforti
Wade Cook
Keith Cooper
Jean-Francois Cordeau
JM Cordero-Ferrera
Jose Cordoba-Pachon
Albert Corominas
Ana Paula Cabral Seixas Costa
Joseph Coughlan
Anna Coves
Peter I Cowling
P Csoka
Christine Currie
Kevin Curtin
Mike Cushman
Wen-Li Dai
Wensheng Dai
Brian Dangerfield
Shubhabrata Das
Mark Daskin
Peter Dawson
FW de Andrade
Patrick De Causmaecker
M de la Banda
Geert De Maere
G de Tomi
Kristof De Witte
Vladimir Deineko
X Delgado-Galván
Mauro Dellamico
Peter Demeester
Erik Demeulemeester
Leyla Demir
B Dengiz
Sarang Deo
U Derigs
Jitamitra Desai
Guy Desaulniers
Dimitris Despotis
Maged Dessouky
Luca Di Gaspero
Luis Candido Dias
Stanko Dimitrov
Qing Ding
Jingxin Dong
Lingxiu Dong
Michael Doumpos
Kathryn Dowsland
Zvi Drezner
Tarik Driouchi
Jose H Dula
E Duman
Okan Duru
Isaac Dyner
Gopalakrishnan Easwaran
Chanaka Edirisinghe
Richard Eglese
HA Eiselt
Tillal Eldabi
Ali Elkamel
Salah Elmaghraby
Hoda ElMaraghy
Gunes Erdogan
Nesim Kohen Erkip
Tijen Ertay
Geoff Evatt
Amit Eynan
Javier Faulin
Q (May) Feng
Qi Feng
Jacques Ferland
Kiran J Fernandes
E Fernandez
Jose Fernandez
Pierpaolo Ferrante
Geraldo Ferrer
GD Ferrier
Meryem Duygun Fethi
Ewa Figielska
Jos Figueira
Robert Fildes
Steven Finlay
Kenneth Fjell
Sarah Fores
Piotr Formanowicz
Ali Asghar Foroughi
A Forrest
Scott Fortmann-Roe
L Alberto Franco
LD Fredendall
James Freeman
Yannick Frein
Simon French
John Friend
Chao Fu
Ted Fuller
Emilio Galdeano-Gómez
Stephen Gallivan
Michel Gamache
Heng Soon Gan
Fernando García
Alberto García-Villoria
Frédéric Gardi
S Gawiejnowicz
ZW Geem
Shahin Gelareh
Patroklos Georgiadis
Joseph Geunes
Parviz Ghandforoush
Ahmed Ghanmi
Anis Gharbi
Ahmed Ghoniem
Diptesh Ghosh
Jay B Ghosh
EV Gijo
Bibhas Giri
Nicolas Glady
Celia Glass
K Glazebrook
Karolina Glowacka
Mark Goh
Eliane Gonçalves Gomes
Yeming Gong
Michael Gorman
Winfried Grassmann
Andrew Greasley
William Greene
Amanda Jayne Gregory
Jeff Griffiths
Shawna Grosskopf
Gianfranco Guastaroba
Marie-Anne Guerry
Alfred Guiffrida
Francisco Guijarro
Mehmet Gumus
Murat Gunal
Angappa Gunasekaran
Evrim Gunes
Alexander Gutfraind
Begoña Gutiérrez-Nieto
Atle Guttormsen
Abdollah Hadi-Vencheh
Ryan Haley
Julian Hall
David Halsall
David Hand
Thomas Hanne
Alan Harding
Moncer Hariga
Julie Harrison
Joseph Hartman
Soenke Hartmann
Elkafi Hassini
Kjell Hausken
J Hayya
Oncu Hazir
Michael Henshaw
Willy Herroelen
Alain Hertz
Truong Ton Hien Duc
Mhand Hifi
Milan Hladik
Sin C Ho
Arild Hoff
Bob Hollier
Seyed Mahdi Homayouni
Liang Hong
Luke Houghton
Bo Hsiao
Xinxin Hu
Zhongsheng Hua
Gaofeng Huang
Ming-Guan Huang
Shian-Chang Huang
X Huang
Xue Huang
Yu-Li Huang
Dennis Huisman
Shiu-Wan Hung
Nguyen Huynh Tuong
Shiuh-Nan Hwang
Matthew R Hyde
Brojeswar I Pal
Walid Ibrahim
Joshua Ignatius
Akio Imai
Armann Ingolfsson
Manuel Iori
Alessio Ishizaka
Bermawi Priyatna Iskandar
Navid Izady
Ola Jabali
MY Jaber
M Jackson
Chandra KK Jaggi
Abul Jamal
Ross James
Adam Janiak
Rene Janssen
Rong Jea
Zied Jemai
Jirawan Jitthavech
Stuart Johns
A Johnson
Dylan Jones
Seong-Jong Joo
Hosang Jung
Leonardo Junqueira
Voratas Kachitvichyanukul
Ravi Kumar Kanapuram
L Kang
Ziho Kang
C Kao
Stella Kapodistria
Derviş Karaboğa
Mustafa Karakul
Andrej Kastrin
Amarpreet Kaur
Parmpreet Kaur
Onur Kaya
Jau-Chuan Ke
Kenneth Kennedy
Saadettin Erhan Kesen
Mohamed Kharbeche
Hemant V Kher
Nicholas Kiefer
Heung-Kyu Kim
Hwa-Joong Kim
Kap Hwan Kim
Myung Suk Kim
Taeho Kim
J Kingston
T Kis
Thomas Kittsteiner
Jack Kleijnen
Jonathan Klein
Vincent Anthony Knight
Konstantin Kogan
Ger Koole
Kathy Kotiadis
Konstantinos Elias Kounetas
Ruth Kowalczyk
Harald Kreher
Moshe Kress
Krishnendu Krishnendu Mukherjee
Wieslaw Kubiak
Dorota Kuchta
Sinem Kulluk
Akhil Kumar
Sameer Kumar
Sumit Kunnumkal
Wen-Hung Kuo
Timo Kuosmanen
Gultekin Kuyzu
Changhyun Kwon
Arnab Kumar Laha
Chams Lahlou
Kin Keung Lai
Kim Fung Lam
Dario Landa-Silva
Ian Langella
Christian Larsen
Hélène Le Cadre
Chih-Ming Lee
Dong-Ho Lee
Hsuan_Shih Lee
Ik Sun Lee
Jun-Yeon Lee
Ming-Chang Lee
Seokcheon Lee
Shie-Jue Lee
W-C Lee
Yusin Lee
Deming Lei
Miguel Lejeune
Tone Lerher
Adam Letchford
Janny Leung
Stephen Leung
Gregory Levitin
Chung-Lun Li
Helong Li
Jian Li
Rongheng Heng Li
Shaoyuan Li
Shuliang Li
Xueping Li
Yanzhi Li
Yongjun Li
Liang Liang
Mou-Yuan Liao
Bertrand MT Lin
Chang-Chun Lin
Chin-Ho Lin
Ming-Ian Lin
Tyrone T Lin
Yi-Mien Lin
Lindawati Lindawati
F-H Franklin Liu
Heping Liu
Jingli Liu
Jiyin Liu
Mingzhe Liu
Peide Liu
Pin-Yang Liu
Shaoxuan Liu
Shiang-Tai Liu
Wenbin Liu
Yang Liu
Andrew Lock
Francisco J Lopez
Luis Lorena
Mohammad Mehdi Lotfi
Sebastián Lozano
Hua-An Lu
Jye-Chyi Lu
Wen-Min Lu
Brian Lunday
Mikulas Luptacik
Jens Lysgaard
Victoria Jane Mabin
Charles M Macal
Broos Maenhout
Francesco Maffioli
CA Magni
Vahid Majazi Dalfard
Ho-Yin Mak
Howard Malin
Catherine Mancel
Andrea Mangani
Benny Mantin
Patrice Marcotte
Vladimir Marianov
Rui Cunha Marques
Andy Marshall
Sarah Elizabeth Marshall
Guiomar Martín-Herrán
Harry Martin
Patrick Martineau
Hatem Masri
Sergio Maturana
George Mavrotas
David Mayston
B McCollum
Nigel Meade
Nuno Melao
Russell Meller
T Melo
Armando Brito Mendes
MRK Mes
Mike Metcalfe
Richard (Rich) Metters
Zhaowei Miao
Ludi Mikhailov
Armando Zeferino Milioni
A Miliono
R John Milne
Jie Min
John Mingers
Ioannis Minis
Stefan Minner
Abbas Mirakhorli
Gilberto Miranda
Subrata Mitra
Brian Mittendorf
John Mittenthal
Flávio Keidi Miyazawa
Joao Vitor Moccellin
Peter Moffatt
Srimathy Mohan
H Monsuur
Ilkyeong Moon
John Morecroft
Richard Morris
Alec Morton
Gur Mosheiov
A Mostafaee
Gillian Mould
James Moultrie
Mohamed Kais Msakni
Christophe Mues
David Muh
Willem Muhren
Josefa Mula
C Mumford
Alix Munier Kordon
Alan Murray
Navonil Mustafee
Jyri Mustajoki
Michael Mutingi
L Muyldermans
Marcelo Seido Nagano
Rakesh Nagi
Gabor Nagy
Rahul Nair
Masao Nakamura
Joe Naoum-Sawaya
Hussein Naseraldin
Hari Natarajan
Martin Neill
Jiro Nemoto
SK Neogy
Alexandra M Newman
Ada Suk-fung Ng
Tsan Sheng Adam Ng
Duc Khuong Nguyen
Kostas Nikolopoulos
Michi Nishihara
Sigrid-Lise Nonas
Andreas Novak
David Nowicki
Bjorn Nygreen
Frances O’Brien
Liam O’Neill
James Odeck
Ceyda Oguz
Victor Oluwasina Oladokun
Fernando Oliveira
Jose Fernando Oliveira
Jordi Olivella
David Olson
Temel Oncan
Kurtulus Oner
Bhakti Stephan Onggo
Kweku-Muata Osei-Bryson
Jamal Ouenniche
Ozgur Ozluk
Joaquin A Pacheco
Bijay Baran Pal
Bryan Palmintier
Dragan Stevan Pamucar
Zhan Pang
Michael Pangburn
Pratik Parikh
K Sam Park
A Parkes
Jane Parkin
Mahmut Parlar
Roberta Parreiras
Rafael Pastor
Dilip Patel
Colin Paterson
Ray Paul
Alan Pearman
Teresa Pena
Kua Hsin Peng
David F Percy
Fabio Henrique Pereira
Marie Persson
Sanja Petrovic
Rajesh Piplani
Montree Piriyakul
Victor Podinovski
Hossain Poorzahedy
Jim Pope
E Porras
Jean-Yves Potvin
John H Powell
Christian Prins
Caroline Prodhon
Nathan Proudlove
Harilaos Psaraftis
PS Pulat
Xiangtong Qi
Thiago Alves de Queiroz
R Quinino
Birger Raa
Robert Raeside
Hari Rajagoplan
Chandrasekharan Rajendran
Camelia Ram
R Ramanathan
Jose Ramirez-Marquez
Graham K Rand
Mohammad Ranjbar
John Ranyard
Marvin Rausand
Subhash C Ray
Amelia Regan
M Reindorp
Gilles Reinhardt
M Isabel Reis dos Santos
Monia Rekik
Paolo Renna
E Reucher
Giovanni Righini
Trevor Ringrose
Jesus Rios
Jose Riuz
Stewart Robinson
Terry Robinson
Rodrigo Gabriel Rodrigo Gabriel de Miranda
Sávio Rodrigues
Antonio Rodriguez Chia
Mikael Ronnqvist
Manuel Rossetti
Roberto Rossi
Paul Rouse
Geoff Royston
Jun Ru
Radoslaw Rudek
John Ruggiero
José L Ruiz
Jesus Saez Aguado
Nima Safaei
Biresh Sahoo
Umit Sami Sakalli
Jozsef Sakovics
Said Salhi
Ronaldo Salles
N Salmasi
S Samanta
Breno Sampaio
Shib Sankar Sana
Marcus Sandberg
Andrew Sanford
S Santos
Tugba Sarac
Haritha Saranga
Ashok Sarkar
Biswajit Sarkar
J Sarkis
William Scherer
Harald Scheule
Fabio Schoen
Jorn Schonberger
Lawrence Seiford
Sridhar Seshadri
Mark Shackleton
Mithun Sharma
John Sharp
Duncan Shaw
Y Shen
Zhihong Shen
Hanif D Sherali
Joseph Shukri Sherif
Udaya Shetty
Chunming (Victor) Shi
Xiaojun Shi
Margaret Shipley
A Shirzadi
Steven Shugan
Afzal Siddiqui
Maria Conceição Silva Portela
Leopold Simar
Jay Simon
Seyhan Sipahi
Inmaculada Sirvent
Karen Smilowitz
Honora Smith
J Cole Smith
Jim Smith
M Smith
Ralph Snyder
Majid Soleimani-damaneh
Daniel Solis
Ebrahim Soltani
Dong-Ping Song
Miao Song
Yuyue Song
Hardik Soni
Taraneh Sowlati
FC Spieksma
R Sridharan
Rajagopalan Srinivasan
Srinivasarghavian Sriram
Thomas Stützle
Euthemia Stavrulaki
T Stewart
Robert Stine
R Stoean
Raik Stolletz
Chandler Stolp
Sverre Storoy
Yu Stoyan
Ling-Huey Su
Pacharasut Sujarittanonta
Jie Sun
Tim Swartz
Aris Syntetos
Kevin Taaffe
Benjamin Tabak
A Tako
Kay Chen Tan
Zhiyi Tan
Mehmet Taner
Ou Tang
Z Caner Taskin
Horst Tempelmeier
James (Jinn-Tsair) Teng
R Teunter
Lyn Carey Thomas
Jonathan Thompson
Werner Timans
Vikram Tiwari
Bilal Toklu
Lise Tole
Franklina Maria Bragion Toledo
Andreas Tolk
Maurizio Tomasella
Shilu Tong
Paolo Toth
DL Tracy
Lorenzo Trapani
Michael A Trick
Denis Trystram
Jung-Fa Tsai
Yu-Chung Tsao
Andrew Tuson
Nickolaos G Tzeremes
Werner Ulrich
Gunduz Ulusoy
Timothy L Urban
Halit Uster
Jorge MS Valente
Maria Cruz Valsero
Ann Van Ackere
Coen van Antwerpen
Ignace Van de Woestyne
Christian van Delft
Robert B Van Der Meer
Durk-Jouke van der Zee
G-J van Houtum
Greet Vanden Berghe
Pieter Vansteenwegen
P Vasant
Clara Bento Vaz
Andy Verity-Harrison
Manish Verma
Marijn Verschelde
Davide Viaggi
Daniele Vigo
Jorge Villalobos
Jan Vissers
Maria Vlasiou
Thomas Vossen
Aleksandar Vujovic
Stein Wallace
Chi-Tai Wang
J-B Wang
Jiadong Wang
Jiang Jian Wang
Juite Wang
Lei Wang
Wen-Ya Wang
Xuping Wang
Ying Ming Wang
Peter Wanke
Don Warsing
Richard Weber
Hui Ming Wee
Lijun Wei
Andres Weintraub
David West
Marcel Weverbergh
Tom Weyman-Jones
Leroy White
J Whittaker
Berend Wierenga
Janet Williams
Michael Williams
Keith Willoughby
John Wilson
Nicholas Wilson
Andrew Wirth
Sabine Wittevrongel
Hartanto Wong
Christopher Woodruff
David Worthington
Mike Wright
Susanne Wruck
C-C Wu
Dash Wu
Jie Wu
Qi Wu
Shaomin Wu
Yong Wu
Eduardo Xavier
Tiaojun Xiao
Jinxing Xie
Jiuping Xu
Minghui Xu
Y Xu
Zeshui Xu
Zhou Xu
Hua Xuan
Masoud Yaghini
Takeo Yamada
Hande Yaman
Hong Yan
Chi-Tien Yang
Dar-Li Yang
Feng Yang
Shu-Jung Sunny Yang
Suh-Jenq Yang
Wei Yang
Tao Yao
X Yao
Zhong Yao
Justin Yates
Jun Ye
Chung Hsing Yeh
Chris Yewlett
Peng-Yeng Yin
Yunqiang Yin
Kuo-Ching Ying
Tsz Leung Yip
Ming-Min Yu
Tiffany Hui-Kuang Yu
Yimin Yu
Yugang Yu
Kevin Kam Fung Yuen
Simone Zanoni
Matthew L Zarracina
Lucio Zavanella
Farah Mansour Zeghal
Mariangela Zenga
Dali Zhang
Dan Zhang
Defu Zhang
Hongkai Zhang
Hongtao Zhang
Renqian Zhang
Xingwen Zhang
C Zhao
Xiaobo Zhao
Xuying Zhao
Xuanhao Zhou
Yong-Wu Zhou
Joe Zhu
Wenbin Zhu
Zhichang Zhu
Jun Zhuang
N Zoroa
Xinxing Zu
Nicolas Zufferey