Unitary analogue of the Nagell totient function
Portugaliae mathematica, Tome 21 (1962) no. 4, pp. 221-232
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@article{PORMA_1962__21_4_114894,
author = {Morgado, Jos\'e},
title = {Unitary analogue of the {Nagell} totient function},
journal = {Portugaliae mathematica},
pages = {221--232},
publisher = {mathdoc},
volume = {21},
number = {4},
year = {1962},
mrnumber = {0146128},
zbl = {0111.25202},
language = {en},
url = {http://geodesic.mathdoc.fr/item/PORMA_1962__21_4_114894/}
}
Morgado, José. Unitary analogue of the Nagell totient function. Portugaliae mathematica, Tome 21 (1962) no. 4, pp. 221-232. http://geodesic.mathdoc.fr/item/PORMA_1962__21_4_114894/