TY  - JOUR
AU  - Andrzej Prószy/nski
TI  - Relations between Elements $r^{2}-r$
JO  - Bulletin of the Polish Academy of Sciences. Mathematics
PY  - 2007
SP  - 317
EP  - 323
VL  - 55
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ba55-4-3/
DO  - 10.4064/ba55-4-3
LA  - en
ID  - 10_4064_ba55_4_3
ER  -