@article{IM2_1981_17_2_a4,
     author = {Vik. S. Kulikov},
     title = {On modifications of degenerations of surfaces with~$\varkappa=0$},
     journal = {Izvestiya. Mathematics},
     pages = {339--342},
     year = {1981},
     volume = {17},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1981_17_2_a4/}
}