@InProceedings{	  badban.ea:semi-linear:2010,
  author	= {B. Badban and M. Torabi Dashti},
  booktitle	= {MFCS},
  language	= {USenglish},
  publisher	= {Springer},
  series	= {LNCS},
  title		= {Semi-linear Parikh images of regular expressions via
		  reduction },
  volume	= 6281,
  year		= 2010,
  user		= {torabidm}
}