TY  - JOUR
AU  - Popescu-Pampu, Patrick
TI  - On the invariance of the semigroup of a quasi-ordinary surface singularity
JO  - Comptes Rendus. Mathématique
PY  - 2002
SP  - 1101
EP  - 1106
VL  - 334
IS  - 12
PB  - Elsevier
UR  - http://www.numdam.org/articles/10.1016/S1631-073X(02)02404-4/
DO  - 10.1016/S1631-073X(02)02404-4
LA  - en
ID  - CRMATH_2002__334_12_1101_0
ER  -