@inproceedings{Neergaard_2004,
    doi = {10.1145/1016850.1016871},
    url = {https://doi.org/10.1145%2F1016850.1016871},
    year = {2004},
    month = {sep},
    publisher = {{ACM}},
    author = {Peter M{\o}ller Neergaard and Harry G. Mairson},
    title = {Types, potency, and idempotency},
    booktitle = {Proceedings of the ninth {ACM} {SIGPLAN} international conference on Functional programming}
}

@inproceedings{Neergaard_2004, doi = {10.1145/1016850.1016871}, url = {https://doi.org/10.1145%2F1016850.1016871}, year = {2004}, month = {sep}, publisher = {{ACM}}, author = {Peter M{\o}ller Neergaard and Harry G. Mairson}, title = {Types, potency, and idempotency}, booktitle = {Proceedings of the ninth {ACM} {SIGPLAN} international conference on Functional programming} }