%0 Journal Article %A Rotkiewicz, A. %T On the theorem of Wójcik %J Glasgow mathematical journal %D 1996 %P 157-162 %V 38 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500031384/ %R 10.1017/S0017089500031384 %F 10_1017_S0017089500031384