@article{VMUMM_1993_3_a15,
     author = {I. D. Kan},
     title = {On an embedding theorem for {M\"obius} functions},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {82--84},
     publisher = {mathdoc},
     number = {3},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1993_3_a15/}
}