@article{10_4153_CMB_1980_056_1,
     author = {Hausman, Miriam},
     title = {An {Upper} {Limit} {Property} of the {Euler} {Function}},
     journal = {Canadian mathematical bulletin},
     pages = {375--377},
     year = {1980},
     volume = {23},
     number = {3},
     doi = {10.4153/CMB-1980-056-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1980-056-1/}
}