de Clippel, Geoffroy - In: Economics Letters 99 (2008) 2, pp. 265-267
Varian's (Varian, H., 1974. Equity, Envy and Efficiency. Journal of Economic Theory 9, 63-91) main results are not valid anymore if the agents are asymmetrically informed at the time of contracting: 1) envy-freeness and efficiency may be incompatible; 2) there may exist efficient allocation rules...