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@article{MZ_1988__200_3_174018, author = {Jaroslaw A. Wisniewski}, title = {Length of {Extremal} {Rays} and {Generalized} {Adjunction.}}, journal = {Mathematische Zeitschrift}, pages = {409--428}, publisher = {mathdoc}, volume = {200}, number = {3}, year = {1988}, zbl = {0668.14004}, url = {http://geodesic.mathdoc.fr/item/MZ_1988__200_3_174018/} }
Jaroslaw A. Wisniewski. Length of Extremal Rays and Generalized Adjunction.. Mathematische Zeitschrift, Tome 200 (1988) no. 3, pp. 409-428. http://geodesic.mathdoc.fr/item/MZ_1988__200_3_174018/