1. Anderson, G., & Blundell, R. (1984). Consumer non-durables in the UK: A dynamic demand system. Economic Journal Conference Papers 94, 34–44.
2. Baldini, M., & Toso, S. (2004). Diseguaglianza, Povertà e Politiche Pubbliche. Il Mulino: Bologna
3. Betti, G. (2000). Quadratic Engel curves and household equivalence scales: The case of Italy 1985–1994. Statistics Research Report LSERR50, London School of Economics.
4. Blundell, R., & Lewbel, A. (1991). On the information content of equivalence scales. Journal of Econometrics, 50, 49–68.
5. Browning, M., & Meghir, C. (1991). The effects of male and female labor supply on commodity demand. Econometrica, 59(4), 925–951.