@article{IVM_1963_3_a19,
     author = {A. I. Rubinshtein},
     title = {On gap series},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {137--148},
     publisher = {mathdoc},
     number = {3},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1963_3_a19/}
}