@article{Denef_1987,
    doi = {10.1016/0022-314x(87)90095-3},
    url = {https://doi.org/10.1016%2F0022-314x%2887%2990095-3},
    year = {1987},
    month = {may},
    publisher = {Elsevier {BV}},
    volume = {26},
    number = {1},
    pages = {46--67},
    author = {Jan Denef and Leonard Lipshitz},
    title = {Algebraic power series and diagonals},
    journal = {Journal of Number Theory}
}

@article{Denef_1987, doi = {10.1016/0022-314x(87)90095-3}, url = {https://doi.org/10.1016%2F0022-314x%2887%2990095-3}, year = {1987}, month = {may}, publisher = {Elsevier {BV}}, volume = {26}, number = {1}, pages = {46--67}, author = {Jan Denef and Leonard Lipshitz}, title = {Algebraic power series and diagonals}, journal = {Journal of Number Theory} }