1. Amputations and prostheses;Vitali, M.; Robinson, K.; Andrews, B.; Harris, E.; Redhead, R.,1986
2. Gilleard CJ..anual of the Clifton assessment procedures for the elderlv (CAI'E);Pattie, A.H.,1979
3. Measurements and prediction;Guttman, L.,1952
4. StatistialpackageJfor the ssscial sciences;Nie, N.H.; Hull, C.H.; Jenkins, J.G.; Steinbrenner, K.; Bent, D.H.,1976