Sowada, C. 2017. The Allocative Implications of the Implementation of the Private Supplementary/Parallel Health Insurance in Egoistic, Altruistic, and Envious Societies – an Economic Perspective (in Polish). Diametros. 51 (Mar. 2017), 90–112. DOI:https://doi.org/10.13153/diam.51.2017.1033.