@inproceedings{Englert_2016,
    doi = {10.1145/2933575.2933577},
    url = {https://doi.org/10.1145%2F2933575.2933577},
    year = {2016},
    month = {jul},
    publisher = {{ACM}},
    author = {Matthias Englert and Ranko Lazi{\'{c}} and Patrick Totzke},
    title = {Reachability in Two-Dimensional Unary Vector Addition Systems with States is {NL}-Complete},
    booktitle = {Proceedings of the 31st Annual {ACM}/{IEEE} Symposium on Logic in Computer Science}
}

@inproceedings{Englert_2016, doi = {10.1145/2933575.2933577}, url = {https://doi.org/10.1145%2F2933575.2933577}, year = {2016}, month = {jul}, publisher = {{ACM}}, author = {Matthias Englert and Ranko Lazi{\'{c}} and Patrick Totzke}, title = {Reachability in Two-Dimensional Unary Vector Addition Systems with States is {NL}-Complete}, booktitle = {Proceedings of the 31st Annual {ACM}/{IEEE} Symposium on Logic in Computer Science} }