Arrow, K.J. and G. Debreu : “Existence of equilibrium for a competitive economy”, Econometrica, 22 (1954): 265-290.
 Beckmann, J. M. : “Edgeworth-Bertrand duopoly revisited”, in R. Henn, ed., Operations Research Verfahren III, Meisenheim: Verlag Anton Hain (1965).
 Berge, C. :”Topological Spaces”, Macmillan, New York (1963).
 Debreu, G. : “Theory of Value: An Axiomatic Analysis of Economic Equilibrium”, Monograph 17, Cowles Foundation for Research in Economics, Yale University Press, New Haven (1959).
Palo, An extension of Aaron’s sustainable rate of return to partially funded pension systems, International Journal of Sustainable Economy 4 (3) (2012) 213–233.
 M. Angrisani, C. Di Palo, Managing the Baby Boomer Demographic Wave in Defined Contribution Pension Systems, Politica Economica-Journal of Economic Policy (PEJEP) 30 (1) (2014) 51–72.
 M. Angrisani, C. Di Palo, Controlling a demographic wave in defined contribution pension systems, Pure Mathematics and Applications 27 (2) (2018) 1–18.
 Swedish Pensions Agency, Orange report
return to partially funded pension systems. International Journal of Sustainable Economy , 4(3):213–233, 2012.
 N. S. BLOMQUIST and H. WIJKANDER. Fertility waves, aggregate savings and the rate of interest. Journal of Population Economics , 7(1):27–48, 1994.
 G. BONOLI and T. SHINKAWA. Population ageing and the logics of pension reform in Western Europe, East Asia and North America. Ageing and pension reform around the world: evidence from eleven countries , pages 1–23, 2005.
 M. FELDSTEIN and E. RANGUELOVA. Accumulated pension collars: A
Massimo Angrisani, Giovanni di Nella, Cinzia di Palo and Augusto Pianese
balance mechanisms in pay-as-you-go pension systems, The Geneva Papers on Risk and Insurance Issues and Practice 34 (2) (2009) 287–317.
 P. A. Samuelson, An exact consumption-loan model of interest with or without the social contrivance of money, The Journal of Political Economy (1958) 467–482.
 H. Aaron, The social insurance paradox, Canadian Journal of Economics and Political Science/Revue canadienne de economiques et science politique 32 (03) (1966) 371–374.
 O. Settergren, B. D. Mikula, The rate of return of pay-as-you-go pension