@article{01730448, title = {Extending extremal contractions from an ample section.}, journal = {Advances in Geometry}, volume = {2}, year = {2002}, pages = {133-146}, doi = {10.1515/advg.2002.003}, zbl = {0987.14010}, language = {en}, url = {http://dml.mathdoc.fr/item/01730448} }
Andreatta, Marco; Occhetta, Gianluca. Extending extremal contractions from an ample section.. Advances in Geometry, Tome 2 (2002) pp. 133-146. doi : 10.1515/advg.2002.003. http://gdmltest.u-ga.fr/item/01730448/