Wróblewska, I., Z. Wróblewska, E. Bujak-Rogala, S. Manulik, and M. Sobieszczańska. “Selected Factors Influencing the Risk of Falls in the Elderly”. Journal of Education, Health and Sport, vol. 9, no. 2, Feb. 2019, pp. 421-36, https://apcz.umk.pl/JEHS/article/view/6635.