TY  - JOUR
AU  - Borchert, Bernd
AU  - Kuske, Dietrich
AU  - Stephan, Frank
TI  - On existentially first-order definable languages and their relation to NP
JO  - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY  - 1999
SP  - 259
EP  - 269
VL  - 33
IS  - 3
PB  - EDP-Sciences
UR  - http://www.numdam.org/item/ITA_1999__33_3_259_0/
LA  - en
ID  - ITA_1999__33_3_259_0
ER  -