@article{baez-2019-network, title={Network Models from Petri Nets with Catalysts}, volume={1}, ISSN={2631-4444}, url={http://dx.doi.org/10.32408/compositionality-1-4}, DOI={10.32408/compositionality-1-4}, journal={Compositionality}, publisher={Centre pour la Communication Scientifique Directe (CCSD)}, author={Baez, John C. and Foley, John and Moeller, Joe}, year={2019}, month=Dec, pages={4} }