@article{SM_2002_193_7_a6,
     author = {I. Yu. Fedorov},
     title = {Divisorial contractions to 3-dimensional $cDV$ points},
     journal = {Sbornik. Mathematics},
     pages = {1091--1102},
     year = {2002},
     volume = {193},
     number = {7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2002_193_7_a6/}
}