@article{Briggs_1993,
    doi = {10.1145/176454.176484},
    url = {https://doi.org/10.1145%2F176454.176484},
    year = {1993},
    month = {mar},
    publisher = {Association for Computing Machinery ({ACM})},
    volume = {2},
    number = {1-4},
    pages = {59--69},
    author = {Preston Briggs and Linda Torczon},
    title = {An efficient representation for sparse sets},
    journal = {{ACM} Letters on Programming Languages and Systems}
}

@article{Briggs_1993, doi = {10.1145/176454.176484}, url = {https://doi.org/10.1145%2F176454.176484}, year = {1993}, month = {mar}, publisher = {Association for Computing Machinery ({ACM})}, volume = {2}, number = {1-4}, pages = {59--69}, author = {Preston Briggs and Linda Torczon}, title = {An efficient representation for sparse sets}, journal = {{ACM} Letters on Programming Languages and Systems} }