Szubert, Józef, Włodzimierz Ziółkowski, Alicja Szymańska-Paszczuk, Wojciech Wieczorek, and Marietta Szubert. 2019. “Defining the Maximum Physiological Parameters of women’s Hearts in the Transition from Youth to Old Age”. In Old Age in the Stream of Life: Reflections on Old Age. Volume 2, edited by Elżbieta Dubas and Marcin Muszyński, 129-46. Poland: Lodz University Press. https://doi.org/10.18778/8142-303-8.09.