References
- Carlsson , D. and Rönnqvist , M. 1998 . Tactical planning of forestry transportation with respect to backhauling , Report LiTH-MAI-R-1998-18 Sweden : Linköping University .
- Eriksson , J. and Rönnqvist , M. Decision support system/tools: Transportation and route planning: Åkarweb – a web based planning system” . Proceedings of the 2nd Forest Engineering Conference . May 12–15 , Växjö , Sweden. pp. 48 – 57 .
- Forsberg , M. 2003 . Transportsamordning Nord - Analys av returtransporter , Report nr 529 - 2003 Uppsala , , Sweden : Skogforsk . (in Swedish)
- Martell , D.L. , Gunn , E.A. and Weintraub , A. 1998 . Forest management challenges for operational researchers . European Journal of Operational Research , 104 : 1 – 17 .
- Rönnqvist , M. 2003 . Optimization in forestry . Mathematical Programming Ser. B , 97 : 267 – 284 .
- Nemhauser , G.L. and Wolsey , L.A. 1998 . Integer and Combinatorial Optimization , John Wiley & Sons .
- Fourer , R. , Gay , D.M. and Kernighan , B.W. 2003 . AMPL – A modeling language for mathematical programming , 2nd , Thomson .
- 2002 . ILOG CPLEX 8.0, User’s manual