@ARTICLE{BorFerHol_j1999_a, author = "Henning~Bordihn and Henning~Fernau and Markus~Holzer", title = "On accepting pure {L}indenmayer systems", journal = fundinform, volume = 38, number = 4, year = 1999, pages = "365--375", url = {http://fi.mimuw.edu.pl/abs38.html#22} }