1. Complexity of vehicle routing and scheduling problems;Lenstra;Networks,1981
2. The truck dispatching problem;Dantzig;Manage. Sci.,1959
3. The International Energy Agency, CO2 emissions from fuel combustion highlights (2015 Edition), 2015, http://www.iea.org/publications/freepublications/publication/CO2EmissionsFromFuelCombustionHighlights2015.pdf (Accessed 06 February 2016).
4. Interactions between operational research and environmental management;Bloemhof-Ruwaard;European J. Oper. Res.,1995
5. Operations research and environmental planning;Daniel;European J. Oper. Res.,1997