@article{D_browski_2009,
    doi = {10.1007/s00453-009-9375-3},
    url = {https://doi.org/10.1007%2Fs00453-009-9375-3},
    year = {2009},
    month = {dec},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {60},
    number = {4},
    pages = {819--828},
    author = {Robert D{\k{a}}browski and Wojciech Plandowski},
    title = {On Word Equations in One Variable},
    journal = {Algorithmica}
}

@article{D_browski_2009, doi = {10.1007/s00453-009-9375-3}, url = {https://doi.org/10.1007%2Fs00453-009-9375-3}, year = {2009}, month = {dec}, publisher = {Springer Science and Business Media {LLC}}, volume = {60}, number = {4}, pages = {819--828}, author = {Robert D{\k{a}}browski and Wojciech Plandowski}, title = {On Word Equations in One Variable}, journal = {Algorithmica} }