@article{TRSPY_2012_276_a3,
     author = {Michel Balazard},
     title = {Elementary remarks on {M\"obius'} function},
     journal = {Informatics and Automation},
     pages = {39--45},
     publisher = {mathdoc},
     volume = {276},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2012_276_a3/}
}