SIEROTOWICZ, Tadeusz; SIEROTOWICZ, Tomasz. Measure Happiness  – A Contribution To Stanislaw Lem’s Definition of Happiness. Part 2: Limits of Approach. Studia Humanistyczne AGH. Społeczeństwo. Kultura. Technologia, [S. l.], v. 23, n. 2, p. 93–113, 2025. DOI: 10.7494/human.2024.23.2.6328. Disponível em: https://journals.agh.edu.pl/human/article/view/6328. Acesso em: 5 dec. 2025.