TY  - JOUR
AU  - Williams, H. C.
TI  - On Numbers Analogous to the Carmichael Numbers
JO  - Canadian mathematical bulletin
PY  - 1977
SP  - 133
EP  - 143
VL  - 20
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1977-025-9/
DO  - 10.4153/CMB-1977-025-9
ID  - 10_4153_CMB_1977_025_9
ER  -