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@article{MAN_1985__271_163985, author = {R. Ganong and P. Russell}, title = {The {Tangent} {Bundle} of a {Ruled} {Surface.}}, journal = {Mathematische Annalen}, pages = {527--548}, publisher = {mathdoc}, volume = {271}, year = {1985}, zbl = {0541.14035}, url = {http://geodesic.mathdoc.fr/item/MAN_1985__271_163985/} }
R. Ganong; P. Russell. The Tangent Bundle of a Ruled Surface.. Mathematische Annalen, Tome 271 (1985), pp. 527-548. http://geodesic.mathdoc.fr/item/MAN_1985__271_163985/