@article{IVM_1983_5_a8,
     author = {E. E. Marenich},
     title = {Solution of a~problem of {S.~Ulam}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {60},
     publisher = {mathdoc},
     number = {5},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1983_5_a8/}
}