Mulia, Pankojini, Ajit Kumar Behura, and Sarita Kar. “Categorical Imperative in Defense of Strong Sustainability”. Problemy Ekorozwoju 11, no. 2 (July 1, 2016): 29–36. Accessed July 22, 2024. https://ph.pollub.pl/index.php/preko/article/view/4940.