@article{CsuDasHol_j2006, author = {Erzs\'ebet~Csuhaj-Varj\'u and J{\"u}rgen~Dassow and Markus~Holzer}, title = {{CD} grammar systems with competence based entry conditions in their cooperation protocols}, journal = ijcm, volume = {83}, number = {2}, year = 2006, pages = {159--169}, url = {http://dx.doi.org/10.1080/00207160500113355} }