TY - JOUR AU - Levi, Inessa AU - Schein, Boris M. TI - The semigroup of one-to-one transformations with finite defects JO - Glasgow mathematical journal PY - 1989 SP - 243 EP - 249 VL - 31 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500007795/ DO - 10.1017/S0017089500007795 ID - 10_1017_S0017089500007795 ER -