@article{Murty_1987,
    doi = {10.1007/bf02592948},
    url = {https://doi.org/10.1007%2Fbf02592948},
    year = {1987},
    month = {jun},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {39},
    number = {2},
    pages = {117--129},
    author = {Katta G. Murty and Santosh N. Kabadi},
    title = {Some {NP}-complete problems in quadratic and nonlinear programming},
    journal = {Mathematical Programming}
}

@article{Murty_1987, doi = {10.1007/bf02592948}, url = {https://doi.org/10.1007%2Fbf02592948}, year = {1987}, month = {jun}, publisher = {Springer Science and Business Media {LLC}}, volume = {39}, number = {2}, pages = {117--129}, author = {Katta G. Murty and Santosh N. Kabadi}, title = {Some {NP}-complete problems in quadratic and nonlinear programming}, journal = {Mathematical Programming} }