TY  - JOUR
AU  - A. Schinzel
TI  - Extensions of Three Theorems of Nagell
JO  - Bulletin of the Polish Academy of Sciences. Mathematics
PY  - 2013
SP  - 195
EP  - 200
VL  - 61
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ba61-3-1/
DO  - 10.4064/ba61-3-1
LA  - en
ID  - 10_4064_ba61_3_1
ER  -