TY  - JOUR
AU  - Youssef Fares
TI  - $\delta $-rings and factorial sequences preservation
JO  - Acta Arithmetica
PY  - 2006
SP  - 377
EP  - 388
VL  - 123
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/aa123-4-6/
DO  - 10.4064/aa123-4-6
LA  - en
ID  - 10_4064_aa123_4_6
ER  -