Więckowski, Paweł. 2011. “Scientific Hedonism As a Basis for the Critical Assessment of the Social Transformations – Richard Layard’s, Mark Anielski’s and Richard Easterlin’s Economy of Happiness”. Annales. Ethics in Economic Life 14 (1):127-37. https://doi.org/10.18778/1899-2226.14.1.12.