Dubas E, Muszyński M, editors. Introduction. In: Old Age in the Stream of Life: Reflections on Old Age. Volume 2 [Internet]. Poland: Lodz University Press; 2019 [cited 2026 Jan. 27]. pp. 9-10. Available from: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/879/chapter/2215