@inproceedings{B_hm_2013,
    doi = {10.1145/2488608.2488626},
    url = {https://doi.org/10.1145%2F2488608.2488626},
    year = {2013},
    month = {jun},
    publisher = {{ACM}},
    author = {Stanislav Böhm and Stefan Göller and Petr Jancar},
    title = {Equivalence of deterministic one-counter automata is {NL}-complete},
    booktitle = {Proceedings of the forty-fifth annual {ACM} symposium on Theory of Computing}
}

@inproceedings{B_hm_2013, doi = {10.1145/2488608.2488626}, url = {https://doi.org/10.1145%2F2488608.2488626}, year = {2013}, month = {jun}, publisher = {{ACM}}, author = {Stanislav Böhm and Stefan Göller and Petr Jancar}, title = {Equivalence of deterministic one-counter automata is {NL}-complete}, booktitle = {Proceedings of the forty-fifth annual {ACM} symposium on Theory of Computing} }