@article{Bapat_1989,
    doi = {10.1007/bf01587081},
    url = {https://doi.org/10.1007%2Fbf01587081},
    year = {1989},
    month = {may},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {44},
    number = {1-3},
    pages = {113--120},
    author = {R. B. Bapat},
    title = {A constructive proof of a permutation-based generalization of Sperner{\textquotesingle}s lemma},
    journal = {Mathematical Programming}
}

@article{Bapat_1989, doi = {10.1007/bf01587081}, url = {https://doi.org/10.1007%2Fbf01587081}, year = {1989}, month = {may}, publisher = {Springer Science and Business Media {LLC}}, volume = {44}, number = {1-3}, pages = {113--120}, author = {R. B. Bapat}, title = {A constructive proof of a permutation-based generalization of Sperner{\textquotesingle}s lemma}, journal = {Mathematical Programming} }