Improving Envelopment in Data Envelopment Analysis Under Variable Return to Scale Technology
: Emmanuel Thanassoulis, Mika Kortelainen, Rachel Allen
: 2011
: European Journal of Operational Research
: 281
: 1
: 1282
: 1297
: https://www.sciencedirect.com/science/article/pii/S0377221711009088