Wei Q, G Yu and J Lu (2002). “The Necessary and Sufficient Conditions for Returns to Scale Properties in Generalized Data Envelopment Analysis Model.” Science in China, Series E 45(5): 503-517.

Wei Q, G Yu and J Lu (2002). “The Necessary and Sufficient Conditions for Returns to Scale Properties in Generalized Data Envelopment Analysis Model.” Science in China, Series E 45(5): 503-517.

Leave a Reply