A categorical semantics for hierarchical Petri NetsGenovese, Fabrizio; Herold, Jelle; Loregian, Fosco; Palombi, DanieleProceedings Twelfth International Workshop on Graph Computational Models, Online, 22nd June 20212021 / p. 51−68 https://doi.org/10.48550/arXiv.2102.00096 Conference Proceedings at Scopus Article at Scopus Article at WOS