Szubert, J. (2019) “Defining the maximum physiological parameters of men’s hearts in the transition from youth to old age”, in Dubas, E. and Muszyński, M. (eds.) Old Age in the Stream of Life: Reflections on Old Age. Volume 2. Poland: Lodz University Press, pp. 109–127. doi:10.18778/8142-303-8.08.