1. Alston, S., et al., 2004. Evaluation Methods for Road Projects in PIARC Members Countries, PIARC-World Road Association, Cedex.
2. Bickel, P., et al., 2006. HEATCO Deliverable 5: Proposal for Harmonised Guidelines. European Commission EC-DG TREN.
3. Multi-attribute decision modelling: industrial applications of DEX;Bohanec;Informatica,1999
4. Evaluating options by combined qualitative and quantitative methods;Bohanec;Acta Psychologica,1992
5. Knowledge-based portfolio analysis for project evaluation;Bohanec;Information & Management,1995