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@article{JRAM_1991__417_153328, author = {Jaroslaw Wisniewski}, title = {On contractions of extremal rays of {Fano} manifolds.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {141--158}, publisher = {mathdoc}, volume = {417}, year = {1991}, zbl = {0721.14023}, url = {http://geodesic.mathdoc.fr/item/JRAM_1991__417_153328/} }
Jaroslaw Wisniewski. On contractions of extremal rays of Fano manifolds.. Journal für die reine und angewandte Mathematik, Tome 417 (1991), pp. 141-158. http://geodesic.mathdoc.fr/item/JRAM_1991__417_153328/