@inproceedings{DasHor_j1994, author = {J{\"u}rgen~Dassow and Holger Hornig}, title = {Conditional grammars with subregular conditions}, booktitle = {Proc. Intern. Conf. Words, Languages and Combinatorics {II}}, publisher = worldsci, year = 1994, editor = {Masami~Ito and Helmut~J{\"u}rgensen}, pages = {71--86} }