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@article{IM_1966__1_141837, author = {O. FORSTER and K.J. RAMSPOTT}, title = {Okasche {Paare} von {Garben} nicht-abelscher {Gruppen.}}, journal = {Inventiones mathematicae}, pages = {260--286}, publisher = {mathdoc}, volume = {1}, year = {1966}, zbl = {0154.33307}, url = {http://geodesic.mathdoc.fr/item/IM_1966__1_141837/} }
O. FORSTER; K.J. RAMSPOTT. Okasche Paare von Garben nicht-abelscher Gruppen.. Inventiones mathematicae, Tome 1 (1966), pp. 260-286. http://geodesic.mathdoc.fr/item/IM_1966__1_141837/