Freixas, Xavier; Mas-Colell, Andreu - In: Econometrica 55 (1987) 3, pp. 515-31
For every range of admissible incomes, the authors characterize the class of Engel curves with the property that if an economy has, first, a price independent distribution of income and, second, preferences which are identical across consumers and generate Engel curves in the class, then the...