@ARTICLE{DasTur_j2009_b, author = {J{\"u}rgen~Dassow and Sherzod~Turaev}, title = {{P}etri Net Controlled Grammars: the Power of Labeling and Final Markings}, journal = romjist, year = 2009, volume = {12}, number = {2}, pages = {191--207}, url = {http://www.imt.ro/romjist/Volum12/Number12_2/pdf/05-Dassow.pdf} }