TY - JOUR AU - P. Ribenboim TI - On the Square Factors of the Numbers of Fermat and Ferentinou-Nicolakopoulou JO - Ευκλείδης Γ PY - 1988 SP - 81 EP - 91 VL - 20 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EUG_1988__20_a7/ LA - gr ID - EUG_1988__20_a7 ER -