@article{Jones_1976,
    doi = {10.1007/bf01683259},
    url = {https://doi.org/10.1007%2Fbf01683259},
    year = {1976},
    month = {dec},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {10},
    number = {1},
    pages = {1--17},
    author = {Neil D. Jones and Y. Edmund Lien and William T. Laaser},
    title = {New problems complete for nondeterministic log space},
    journal = {Mathematical Systems Theory}
}

@article{Jones_1976, doi = {10.1007/bf01683259}, url = {https://doi.org/10.1007%2Fbf01683259}, year = {1976}, month = {dec}, publisher = {Springer Science and Business Media {LLC}}, volume = {10}, number = {1}, pages = {1--17}, author = {Neil D. Jones and Y. Edmund Lien and William T. Laaser}, title = {New problems complete for nondeterministic log space}, journal = {Mathematical Systems Theory} }