%0 Journal Article
%A Salomaa, Kai
%A Wood, D.
%A Yu, Sheng
%T Pumping and pushdown machines
%J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
%D 1994
%P 221-232
%V 28
%N 3-4
%I EDP-Sciences
%U http://www.numdam.org/item/ITA_1994__28_3-4_221_0/
%G en
%F ITA_1994__28_3-4_221_0