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@article{MZ_1990__204_3_183765, author = {Ronald S. Irving}, title = {Singular {Blocks} of the {Category} {O.}}, journal = {Mathematische Zeitschrift}, pages = {209--224}, publisher = {mathdoc}, volume = {204}, number = {3}, year = {1990}, zbl = {0715.17010}, url = {http://geodesic.mathdoc.fr/item/MZ_1990__204_3_183765/} }
Ronald S. Irving. Singular Blocks of the Category O.. Mathematische Zeitschrift, Tome 204 (1990) no. 3, pp. 209-224. http://geodesic.mathdoc.fr/item/MZ_1990__204_3_183765/