@article{DAN_1977_236_5_a0,
     author = {F. A. Bogomolov},
     title = {Families of curves on a surface of general type},
     journal = {Doklady Akademii Nauk},
     pages = {1041--1044},
     year = {1977},
     volume = {236},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_236_5_a0/}
}