Crettez, Bertrand; Hayek, Nayla; Courtault, Jean-Michel - In: Economics Bulletin 4 (2004) 7, pp. 1-3
The proposition 1 of our paper "On the differentiability of the benefit function" (Economics Bulletin, March, 24) is incorrect under the assumption 1. We provide two alternative versions of this assumption under which the statement of proposition 1 holds true.