@ARTICLE{Tru_j2003_b, author = {Bianca~Truthe}, title = {On the Finiteness of Picture Languages of synchronous, simple non-deterministic Chain Code Picture Systems}, journal = fundinform, volume = {56}, number = {4}, year = {2003}, pages = {389--409}, url = {http://iospress.metapress.com/content/xxvwy566x3qqfn2c/fulltext.pdf} } %http://fi.mimuw.edu.pl/abs56.html#21