Rüdiger Valk and G. Vidal-Naquet.
On the rationality of Petri net languages.
In H. Tzschach, H. Waldschmidt, and H.K.G. Walter, editors, Theoretical Computer Science, Darmstadt, March, 1977, volume 48 of Lecture Notes in Computer Science, pages 319-328, Berlin, Heidelberg, New
York, 1977. Springer-Verlag.
@INPROCEEDINGS{Valk+77a, AUTHOR = {Valk, R{\"u}diger and Vidal-Naquet, G.}, ADDRESS = Springer.addr, EDITOR = {Tzschach, H. and Waldschmidt, H. and Walter, H.K.G.}, BOOKTITLE = {Theoretical Computer Science, Darmstadt, March, 1977}, PAGES = {319--328}, PUBLISHER = Springer, TITLE = {On the Rationality of {Petri} Net Languages}, SERIES = LNCS, VOLUME = {48}, YEAR = 1977 }