1. Angulo-Meza, L., Biondi Neto, L., Soares de Mello, J.C.C.B., Gomes, E.G. and Coelho, P.H.G. (2005) Free Software for Decision Analysis: A Software Package for Data Envelopment Models. Proceedings of the 7th International Conference on Enterprise Information Systems, Miami, Florida.
2. Arrow, K.J. (1951) Social Choice and Individual Values. New York: Wiley.
3. Banker, R.D., Charnes, A. and Cooper, W.W. (1984) Some models for estimating technical scale inefficiencies in data envelopment analysis. Management Science 30 (9): 1078–1092.
4. Barba-Romero, S. and Pomerol, J.C. (1997) Decisiones Multicriterio: Fundamentos Teóricos e Utilización Práctica. Madrid, Spain: Universidad de Alcalá.
5. Barros, C.P. (2006) A benchmark analysis of Italian seaports using data envelopment analysis. Maritime Economics and Logistics 8 (4): 347–365.