Niewiadomska, A., and E. Sobolewska-Poniedziałek. “UTILISING THE PROFESSIONAL POTENTIAL OF THE ELDERLY IN THE PROCESS OF CONSTRUCTION OF SILVER ECONOMY IN POLAND”. Acta Scientiarum Polonorum. Oeconomia, vol. 14, no. 1, Mar. 2015, pp. 81-91, https://aspe.sggw.edu.pl/article/view/463.