Michel Hack. The Equality Problem for Vector Addition Systems is Undecidable. Theoretical Computer Science, 2(1):77-95, 1976.
@article{Hack76,
title = {The Equality Problem for Vector Addition Systems is Undecidable},
author = {Michel Hack},
year = {1976},
researchr = {https://researchr.org/publication/Hack76},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {2},
number = {1},
pages = {77-95},
}