@article{10_4153_CMB_1991_047_2, author = {Bashir, M. A.}, title = {Notice of {Retraction}}, journal = {Canadian mathematical bulletin}, pages = {294--294}, year = {1991}, volume = {34}, number = {3}, doi = {10.4153/CMB-1991-047-2}, url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1991-047-2/} }