@article{GDZPPN002101912, title = {On extremal rays of the higher dimensional varieties.}, journal = {Inventiones mathematicae}, volume = {82}, year = {1985}, pages = {347-358}, zbl = {0554.14001}, url = {http://dml.mathdoc.fr/item/GDZPPN002101912} }
Ando, Tetsuya. On extremal rays of the higher dimensional varieties.. Inventiones mathematicae, Tome 82 (1985) pp. 347-358. http://gdmltest.u-ga.fr/item/GDZPPN002101912/