@article{Arnold_1988,
    doi = {10.1016/0020-0190(88)90029-4},
    url = {https://doi.org/10.1016%2F0020-0190%2888%2990029-4},
    year = {1988},
    month = {sep},
    publisher = {Elsevier {BV}},
    volume = {29},
    number = {2},
    pages = {57--66},
    author = {Andr{\'{e}} Arnold and Paul Crubille},
    title = {A linear algorithm to solve fixed-point equations on transition systems},
    journal = {Information Processing Letters}
}

@article{Arnold_1988, doi = {10.1016/0020-0190(88)90029-4}, url = {https://doi.org/10.1016%2F0020-0190%2888%2990029-4}, year = {1988}, month = {sep}, publisher = {Elsevier {BV}}, volume = {29}, number = {2}, pages = {57--66}, author = {Andr{\'{e}} Arnold and Paul Crubille}, title = {A linear algorithm to solve fixed-point equations on transition systems}, journal = {Information Processing Letters} }