@article{10_4153_CMB_2015_027_3, author = {Wright, Thomas}, title = {Variants of {Korselt{\textquoteright}s} {Criterion}}, journal = {Canadian mathematical bulletin}, pages = {869--876}, year = {2015}, volume = {58}, number = {4}, doi = {10.4153/CMB-2015-027-3}, url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2015-027-3/} }