%0 Journal Article %A Yacoub, K. R. %T A Note on the Classes of Non-Linear Semi-Special Permutations %J Glasgow mathematical journal %D 1958 %P 3-6 %V 4 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S2040618500033761/ %R 10.1017/S2040618500033761 %F 10_1017_S2040618500033761