%0 Journal Article %A Aceto, Luca %A Ésik, Zoltán %A Ingólfsdóttir, Anna %T A fully equational proof of Parikh's theorem %J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications %D 2002 %P 129-153 %V 36 %N 2 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/ita:2002007/ %R 10.1051/ita:2002007 %G en %F ITA_2002__36_2_129_0