@article{ITA_2009__43_2_365_0,
     author = {Masopust, Tom\'a\v{s} and Meduna, Alexander},
     title = {On context-free rewriting with a simple restriction and its computational completeness},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {365--378},
     publisher = {EDP-Sciences},
     volume = {43},
     number = {2},
     year = {2009},
     doi = {10.1051/ita/2009002},
     mrnumber = {2512264},
     zbl = {1171.68017},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ita/2009002/}
}