@article{RM_1972_27_6_a12,
     author = {V. M. Galkin},
     title = {The first factor of the class number of ideals of a~cyclotomic field},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1972},
     volume = {27},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1972_27_6_a12/}
}