1. The multi-class, multi-criteria traffic network equilibrium and systems optimum problem
2. ELCIDIS ( 2002 ) Final Report, European Commission .
3. European Commission ( 2002 ) Proposal for a European Parliament and Council Regulation on the granting of Community financial assistance to improve the environmental performance of the freight transport system , COM (2002) 54 final, 2002/0038 (COD), Brussels .
4. European Conference of Ministers of Transport ( 1993 ) Terminology on combined transport . Available at: http://www.cordis.lu/transport . (accessed December 2004) .