@misc{indiciae006336186f4f,
  title = {Isomorphisms between Petri nets and dataflow graphs},
  author = {Kavi, Krishna M. and Buckles, Billy P. and Bhat, U. Narayan},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880027358},
  note = {Source identifier: 19880027358}
}