@article{IVM_1961_4_a7,
     author = {Yu. E. Penzov},
     title = {On the arithmetic of $n$-relations},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {78--92},
     publisher = {mathdoc},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1961_4_a7/}
}