TY  - JOUR
AU  - Sommerhalder, R.
TI  - Classes of languages proof against regular pumping
JO  - RAIRO. Informatique théorique
PY  - 1980
SP  - 169
EP  - 180
VL  - 14
IS  - 2
PB  - EDP-Sciences
UR  - http://www.numdam.org/item/ITA_1980__14_2_169_0/
LA  - en
ID  - ITA_1980__14_2_169_0
ER  -