References
- Akay AE, Sessions J, Bettinger P, Toupin R, Eklund A. 2006. Evaluating the salvage value of fire-killed timber by helicopter: effects of yarding distance and time since fire. West J Appl For. 21:102–107.
- Baldini S. 1977. Prove preliminari di esbosco con elicottero [Preliminary study on helicopter logging]. Monti e Boschi. 28:53–59.
- Bernard M, Kondak K, Hommel G. 2008. A slung load transportation system based on small size helicopters. In: Mahr B, Huanye S, editors. Autonomous systems – self-organization, management, and control. SE: Springer Netherlands; p. 49–61.
- Bigsby H, Ling P. 2013. Long-term productivity of helicopter logging in Sarawak. Int J For Eng. 24:24–30.
- Björheden R. 1991. Basic time concepts for international comparisons of time study reports. Int J For Eng. 2:33–39.
- Cavalli R, Grigolato S. 2010. Influence of characteristics and extension of a forest road network on the supply cost of forest woodchips. J For Res. 15:202–209.
- Christian LE, Brackley AM. 2007. Helicopter logging productivity on harvesting operations in southeast Alaska, using ecologically based silvicultural prescriptions. West J Appl For. 22:142–147.
- Ciesa M, Grigolato S, Cavalli R. 2014. Analysis on vehicle and walking speeds of search and rescue ground crews in mountainous areas. J Outdoor Recreat Tour. 5–6:48–57.
- Dykstra DP. 1976. Production rates and costs for yarding by cable, balloon, and helicopter compared for clear cuttings and partial cuttings. Bulletin Research 22. Corvallis (OR): Forest Research Laboratory School of Forestry Oregon State University.
- Faccoli M, Finozzi V, Gatto P. 2011. Sanitation felling and helicopter harvesting of bark beetle-infested trees in alpine forests: an assessment of the economic costs. For Prod J. 61:675–680.
- Gallo R, Grigolato S, Cavalli R, Mazzetto F. 2013. GNSS-based operational monitoring devices for forest logging operation chains. J Agric Eng. 44:140–143.
- Grigolato S, Pellegrini M, Cavalli R. 2013. Temporal analysis of the traffic loads on forest road networks. IForest. 6:255–261.
- Hartsough BR, Lambert MB, Miles JA. 1985. Airship logging: parameters affecting load factors. T ASAE. 28:1363–1366.
- Hartsough BR, Miles JA, Lambert MB. 1986. Simulating changes to helicopter logging operations. T ASAE. 29:1228–1231.
- Heinimann HR, Caminada L. 1996. Helicopter logging in Switzerland. Analysis of selective logging operations. Proceedings of a joint symposium of IUFRO 3.06 Forest Operations under Mountainous Conditions and the 9th Pacific Northwest Skyline Symposium; 1996 May 13–16; Campbell River (BC-Canada): Forest Engineering Research Institute of Canada.
- Holzleitner F, Kanzian C, Stampfer K. 2011. Analyzing time and fuel consumption in road transport of round wood with an onboard fleet manager. Eur J For Res. 130:293–301.
- Horcher A, Visser R. 2011. Using on-board GPS to identify training needs of helicopter pilots. Croat J For Eng. 32:481–488.
- IFNC. 2005. Inventario Nazionale delle Foreste e dei Serbatoi Forestali di Carbonio [National Inventory of Forest and Carbon Sink]. MiPAF – Ispettorato Generale del Corpo Forestale dello Stato, Trento: CRA-ISAFA. 653 p.
- Messingerová V, Tajboš J. 2006. Technological and environmental parameters of helicopter timber extraction in Slovakia. Croat J For Eng. 27:123–133.
- Pellegrini M, Ackerman P, Cavalli R. 2013. On-board computing in forest machinery as a tool to improve skidding operations in South African softwood sawtimber operations. South For a J For Sci. 75:89–96.
- Proto AR, Zimbalatti G. 2015. Firewood cable extraction in the southern Mediterranean area of Italy. Forest Sci Technol. (Article in press)
- Regione del Veneto. 2012. Prezziario regionale agro-forestale [Regional price list for agriculture and forestry]. Venezia: Regione del Veneto. 45 p.
- Regione Lombardia. 2013. Forest utilization regional inventory data. [S.I.Ta.B Information system on forest utilization]. Milano: Sistemi Verdi e Paessaggio, Regione Lombardia; [cited 2014 Jan 20]. Available from: http://www.cartografia.regione.lombardia.it/
- Simwanda M, Wing MG, Sessions J. 2011. Evaluating global positioning system accuracy for forest biomass transportation tracking within varying forest canopy. West J Appl For. 26:165–173.
- Spinelli R, Magagnotti N, Facchinetti D. 2013. Logging companies in the European mountains: an example from the Italian Alps. Int J For Eng. 24:109–120.
- Stampfer K, Gridling H, Visser R. 2002. Analyses of parameters affecting helicopter timber extraction. Int J For Eng. 13:61–68.
- Tomazin I, Kovacs T. 2003. Medical considerations in the use of helicopters in mountain rescue. High Alt Med Biol. 4:479–483.
- Valente C, Spinelli R, Hillring BG. 2011. LCA of environmental and socio-economic impacts related to wood energy production in alpine conditions: Valle di Fiemme (Italy). J Clean Prod. 19:1931–1938.
- Veal MW, Taylor SE, McDonald TP, McLemore DK, Dunn MR. 2001. Accuracy of tracking forest machines with GPS. T ASAE. 44:1903–1911.
- Wang J, Grushecky ST, McNeel J. 2005. Production analysis of helicopter logging in West Virginia: a preliminary case study. For Prod J. 55:71–76.
- Zimbalatti G, Proto AR. 2009. Cable logging opportunities for firewood in Calabrian forests. Biosyst Eng. 102:63–68.