A. Ćwirlej-Sozańska, A. Wilmowska-Pietruszyńska, A. Wiśniowska, A. Guzik, M. Drużbicki, and B. Sozański, “Assessment of mobility, body balance and risk of fractures in the elderly”, Eur J Clin Exp Med, vol. 14, no. 2, pp. 134–147, Jun. 2016.