@article{LAINE_2011,
    doi = {10.1142/s0129054111008088},
    url = {https://doi.org/10.1142%2Fs0129054111008088},
    year = {2011},
    month = {feb},
    publisher = {World Scientific Pub Co Pte Lt},
    volume = {22},
    number = {02},
    pages = {345--375},
    author = {MARKKU LAINE and WOJCIECH PLANDOWSKI},
    title = {{WORD} {EQUATIONS} {WITH} {ONE} {UNKNOWN}},
    journal = {International Journal of Foundations of Computer Science}
}

@article{LAINE_2011, doi = {10.1142/s0129054111008088}, url = {https://doi.org/10.1142%2Fs0129054111008088}, year = {2011}, month = {feb}, publisher = {World Scientific Pub Co Pte Lt}, volume = {22}, number = {02}, pages = {345--375}, author = {MARKKU LAINE and WOJCIECH PLANDOWSKI}, title = {{WORD} {EQUATIONS} {WITH} {ONE} {UNKNOWN}}, journal = {International Journal of Foundations of Computer Science} }