@article{DAN_1964_155_4_a2,
     author = {I. V. Viten'ko and A. N. Kostovskii},
     title = {Determination of principal indices of {Laurent} series},
     journal = {Doklady Akademii Nauk},
     pages = {732--734},
     publisher = {mathdoc},
     volume = {155},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_155_4_a2/}
}