@article{ZNSL_1980_103_a0,
     author = {Z. I. Borevich},
     title = {On periodicity of residues of the number of finite labeled topologies},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {5--12},
     year = {1980},
     volume = {103},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1980_103_a0/}
}