%0 Journal Article
%A Borchert, Bernd
%A Kuske, Dietrich
%A Stephan, Frank
%T On existentially first-order definable languages and their relation to NP
%J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
%D 1999
%P 259-269
%V 33
%N 3
%I EDP-Sciences
%U http://archive.numdam.org/item/ITA_1999__33_3_259_0/
%G en
%F ITA_1999__33_3_259_0