@article{Sahni_1974,
    doi = {10.1137/0203021},
    url = {https://doi.org/10.1137%2F0203021},
    year = {1974},
    month = {dec},
    publisher = {Society for Industrial {\&} Applied Mathematics ({SIAM})},
    volume = {3},
    number = {4},
    pages = {262--279},
    author = {Sartaj Sahni},
    title = {Computationally Related Problems},
    journal = {{SIAM} Journal on Computing}
}

@article{Sahni_1974, doi = {10.1137/0203021}, url = {https://doi.org/10.1137%2F0203021}, year = {1974}, month = {dec}, publisher = {Society for Industrial {\&} Applied Mathematics ({SIAM})}, volume = {3}, number = {4}, pages = {262--279}, author = {Sartaj Sahni}, title = {Computationally Related Problems}, journal = {{SIAM} Journal on Computing} }