@article{SM_2007_198_8_a5,
     author = {K. A. Shramov},
     title = {$\mathbb Q$-factorial quartic threefolds},
     journal = {Sbornik. Mathematics},
     pages = {1165--1174},
     year = {2007},
     volume = {198},
     number = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2007_198_8_a5/}
}