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@article{SF_1986__33_134804, author = {T. Harju and J. Karhum\"aki}, title = {On the defect theorem and simpliflability.}, journal = {Semigroup forum}, pages = {199--218}, publisher = {mathdoc}, volume = {33}, year = {1986}, zbl = {0621.20033}, url = {http://geodesic.mathdoc.fr/item/SF_1986__33_134804/} }
T. Harju; J. Karhumäki. On the defect theorem and simpliflability.. Semigroup forum, Tome 33 (1986), pp. 199-218. http://geodesic.mathdoc.fr/item/SF_1986__33_134804/