@article{Hopcroft_1973,
    doi = {10.1137/0202019},
    url = {https://doi.org/10.1137%2F0202019},
    year = {1973},
    month = {dec},
    publisher = {Society for Industrial {\&} Applied Mathematics ({SIAM})},
    volume = {2},
    number = {4},
    pages = {225--231},
    author = {John E. Hopcroft and Richard M. Karp},
    title = {An {\textdollar}n{\^{}}$\lbrace$5/2$\rbrace$ {\textdollar} Algorithm for Maximum Matchings in Bipartite Graphs},
    journal = {{SIAM} Journal on Computing}
}

@article{Hopcroft_1973, doi = {10.1137/0202019}, url = {https://doi.org/10.1137%2F0202019}, year = {1973}, month = {dec}, publisher = {Society for Industrial {\&} Applied Mathematics ({SIAM})}, volume = {2}, number = {4}, pages = {225--231}, author = {John E. Hopcroft and Richard M. Karp}, title = {An {\textdollar}n{\^{}}$\lbrace$5/2$\rbrace$ {\textdollar} Algorithm for Maximum Matchings in Bipartite Graphs}, journal = {{SIAM} Journal on Computing} }