@article{SM_1981_39_3_a0,
     author = {A. A. Dezin},
     title = {On some systems of equations containing a~small parameter},
     journal = {Sbornik. Mathematics},
     pages = {289--298},
     year = {1981},
     volume = {39},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1981_39_3_a0/}
}