@article{SM_1972_18_2_a9,
     author = {I. V. Dolgachev},
     title = {The {Euler} characteristic of a~family of algebraic varieties},
     journal = {Sbornik. Mathematics},
     pages = {303--319},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1972},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1972_18_2_a9/}
}