%0 Journal Article %A Langer, Miroslav %A Kelemenová, Alica %T Positioned agents in eco-grammar systems with border markers and pure regulated grammars %J Kybernetika %D 2012 %P 502-517 %V 48 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_2012__48_3_a10/ %G en %F KYB_2012__48_3_a10