On the number of distinct values of Euler's φ-function
Maier, Helmut ; Pomerance, Carl
Acta Arithmetica, Tome 50 (1988), p. 263-275 / Harvested from The Polish Digital Mathematics Library
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Publié le : 1988-01-01
EUDML-ID : urn:eudml:doc:206084 
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     author = {Maier, Helmut and Pomerance, Carl},
     title = {On the number of distinct values of Euler's $\phi$-function},
     journal = {Acta Arithmetica},
     volume = {50},
     year = {1988},
     pages = {263-275},
     zbl = {0638.10045},
     language = {en},
     url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav49i3p263bwm}
}

Maier, Helmut; Pomerance, Carl. On the number of distinct values of Euler's φ-function. Acta Arithmetica, Tome 50 (1988) pp. 263-275. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav49i3p263bwm/