@article{Gummelt_1996,
    doi = {10.1007/bf00239998},
    url = {https://doi.org/10.1007%2Fbf00239998},
    year = {1996},
    month = {aug},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {62},
    number = {1},
    author = {Petra Gummelt},
    title = {Penrose tilings as coverings of congruent decagons},
    journal = {Geometriae Dedicata}
}

@article{Gummelt_1996, doi = {10.1007/bf00239998}, url = {https://doi.org/10.1007%2Fbf00239998}, year = {1996}, month = {aug}, publisher = {Springer Science and Business Media {LLC}}, volume = {62}, number = {1}, author = {Petra Gummelt}, title = {Penrose tilings as coverings of congruent decagons}, journal = {Geometriae Dedicata} }