Kapteyn, Arie2021-02-162021-02-161979http://hdl.handle.net/11693/66587Review of Economics and Statistics -- 61 (4), November 1979 -- pages 549-563.14 pages; 549-563EnglishEconomics, MathematicalEconomic developmentMathematical modelsCON.K1384CuttingHCONTURK0001384