@article{Socolar_2011,
    doi = {10.1016/j.jcta.2011.05.001},
    url = {https://doi.org/10.1016%2Fj.jcta.2011.05.001},
    year = {2011},
    month = {nov},
    publisher = {Elsevier {BV}},
    volume = {118},
    number = {8},
    pages = {2207--2231},
    author = {Joshua E.S. Socolar and Joan M. Taylor},
    title = {An aperiodic hexagonal tile},
    journal = {Journal of Combinatorial Theory, Series A}
}

@article{Socolar_2011, doi = {10.1016/j.jcta.2011.05.001}, url = {https://doi.org/10.1016%2Fj.jcta.2011.05.001}, year = {2011}, month = {nov}, publisher = {Elsevier {BV}}, volume = {118}, number = {8}, pages = {2207--2231}, author = {Joshua E.S. Socolar and Joan M. Taylor}, title = {An aperiodic hexagonal tile}, journal = {Journal of Combinatorial Theory, Series A} }