@article{02097213,
title = {On the set of values of the Euler function.},
journal = {Vladikavkazski\u\i\ Matematicheski\u\i\ Zhurnal},
volume = {1},
year = {1999},
pages = {53-55},
zbl = {1052.11502},
language = {en},
url = {http://dml.mathdoc.fr/item/02097213}
}
Tasoev, B.G. On the set of values of the Euler function.. Vladikavkazskiĭ Matematicheskiĭ Zhurnal, Tome 1 (1999) pp. 53-55. http://gdmltest.u-ga.fr/item/02097213/