@article{Agarwal_1997,
    doi = {10.1007/bf01196127},
    url = {https://doi.org/10.1007%2Fbf01196127},
    year = {1997},
    month = {mar},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {17},
    number = {1},
    pages = {1--9},
    author = {Pankaj K. Agarwal and Boris Aronov and Janos Pach and Richard Pollack and Micha Sharir},
    title = {Quasi-planar graphs have a linear number of edges},
    journal = {Combinatorica}
}

@article{Agarwal_1997, doi = {10.1007/bf01196127}, url = {https://doi.org/10.1007%2Fbf01196127}, year = {1997}, month = {mar}, publisher = {Springer Science and Business Media {LLC}}, volume = {17}, number = {1}, pages = {1--9}, author = {Pankaj K. Agarwal and Boris Aronov and Janos Pach and Richard Pollack and Micha Sharir}, title = {Quasi-planar graphs have a linear number of edges}, journal = {Combinatorica} }