@article{Vazirani_2011,
    doi = {10.1145/1970392.1970394},
    url = {https://doi.org/10.1145%2F1970392.1970394},
    year = {2011},
    month = {may},
    publisher = {Association for Computing Machinery ({ACM})},
    volume = {58},
    number = {3},
    pages = {1--25},
    author = {Vijay V. Vazirani and Mihalis Yannakakis},
    title = {Market equilibrium under separable, piecewise-linear, concave utilities},
    journal = {Journal of the {ACM}}
}

@article{Vazirani_2011, doi = {10.1145/1970392.1970394}, url = {https://doi.org/10.1145%2F1970392.1970394}, year = {2011}, month = {may}, publisher = {Association for Computing Machinery ({ACM})}, volume = {58}, number = {3}, pages = {1--25}, author = {Vijay V. Vazirani and Mihalis Yannakakis}, title = {Market equilibrium under separable, piecewise-linear, concave utilities}, journal = {Journal of the {ACM}} }