Durrell L. Clea. L.: Faber, 1963. P. 106 (рус. пер.: Даррелл Л. Клеа. СПб.: Симпозиум, 2004. С. 127).

Mincer /. Market Prices, Opportunity Costs, and Income Effects // Measurement in Economics / ed. by C. Christ et al. Stanford, Calif.: Stanford University Press, 1963; Willis R. J. A New Approach to the Economic Theory of Fertility Behavior // Journal of Political Economy. 1973. Vol. 81. P. 14-64; Ben-Porath Y. Economic Analysis of Fertility in Israel: Point and Counterpoint // Journal of Political Economy. 1973. Vol. 81. P. 202-233.