@article{MZM_1979_26_5_a3,
     author = {M. Naser Shafii},
     title = {Generalizations of {Severi's} theorem},
     journal = {Matemati\v{c}eskie zametki},
     pages = {687--690},
     year = {1979},
     volume = {26},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1979_26_5_a3/}
}