@article{Lenstra_1983,
    doi = {10.1287/moor.8.4.538},
    url = {https://doi.org/10.1287%2Fmoor.8.4.538},
    year = {1983},
    month = {nov},
    publisher = {Institute for Operations Research and the Management Sciences ({INFORMS})},
    volume = {8},
    number = {4},
    pages = {538--548},
    author = {H. W. Lenstra},
    title = {Integer Programming with a Fixed Number of Variables},
    journal = {Mathematics of Operations Research}
}

@article{Lenstra_1983, doi = {10.1287/moor.8.4.538}, url = {https://doi.org/10.1287%2Fmoor.8.4.538}, year = {1983}, month = {nov}, publisher = {Institute for Operations Research and the Management Sciences ({INFORMS})}, volume = {8}, number = {4}, pages = {538--548}, author = {H. W. Lenstra}, title = {Integer Programming with a Fixed Number of Variables}, journal = {Mathematics of Operations Research} }