Dassow, JürgenJürgenDassowManea, FlorinFlorinManeaTruthe, BiancaBiancaTruthe2022-06-082022-06-082012https://resolver.sub.uni-goettingen.de/purl?gro-2/110384enOn external contextual grammars with subregular selection languagesjournal_article10.1016/j.tcs.2012.04.008S0304397512003520