@article{Rajan_1993,
    doi = {10.1016/0012-365x(93)90061-w},
    url = {https://doi.org/10.1016%2F0012-365x%2893%2990061-w},
    year = {1993},
    month = {aug},
    publisher = {Elsevier {BV}},
    volume = {118},
    number = {1-3},
    pages = {197--206},
    author = {Dayanand S. Rajan},
    title = {The equations {DkY} = Xn in combinatorial species},
    journal = {Discrete Mathematics}
}

@article{Rajan_1993, doi = {10.1016/0012-365x(93)90061-w}, url = {https://doi.org/10.1016%2F0012-365x%2893%2990061-w}, year = {1993}, month = {aug}, publisher = {Elsevier {BV}}, volume = {118}, number = {1-3}, pages = {197--206}, author = {Dayanand S. Rajan}, title = {The equations {DkY} = Xn in combinatorial species}, journal = {Discrete Mathematics} }