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@article{MZ_1980__174_173004, author = {Martin Huber and Paul C. Eklof}, title = {On the {Rank} of {Ext.}}, journal = {Mathematische Zeitschrift}, pages = {159--186}, publisher = {mathdoc}, volume = {174}, year = {1980}, zbl = {0424.20051}, url = {http://geodesic.mathdoc.fr/item/MZ_1980__174_173004/} }
Martin Huber; Paul C. Eklof. On the Rank of Ext.. Mathematische Zeitschrift, Tome 174 (1980), pp. 159-186. http://geodesic.mathdoc.fr/item/MZ_1980__174_173004/