Yu G, QL Wei and WW Cooper (1997). “Using Displaced Cone Representation in DEA Models for Nondominated Solutions in Multiobjective Programming.” Systems Science and Mathematical Sciences 10(1): 41-49.
Yu G, QL Wei and WW Cooper (1997). “Using Displaced Cone Representation in DEA Models for Nondominated Solutions in Multiobjective Programming.” Systems Science and Mathematical Sciences 10(1): 41-49.