@article{Th_rien_1985,
    doi = {10.1016/0022-4049(85)90071-4},
    url = {https://doi.org/10.1016%2F0022-4049%2885%2990071-4},
    year = {1985},
    publisher = {Elsevier {BV}},
    volume = {36},
    pages = {205--215},
    author = {Denis Th{\'{e}}rien and Alex Weiss},
    title = {Graph congruences and wreath products},
    journal = {Journal of Pure and Applied Algebra}
}

@article{Th_rien_1985, doi = {10.1016/0022-4049(85)90071-4}, url = {https://doi.org/10.1016%2F0022-4049%2885%2990071-4}, year = {1985}, publisher = {Elsevier {BV}}, volume = {36}, pages = {205--215}, author = {Denis Th{\'{e}}rien and Alex Weiss}, title = {Graph congruences and wreath products}, journal = {Journal of Pure and Applied Algebra} }