@inproceedings{yorgey-2010-species,
 author = {Yorgey, Brent A.},
 title = {Species and functors and types, oh my!},
 booktitle = {Proceedings of the third ACM Haskell symposium on Haskell},
 series = {Haskell '10},
 year = {2010},
 isbn = {978-1-4503-0252-4},
 location = {Baltimore, Maryland, USA},
 pages = {147--158},
 numpages = {12},
 url = {http://doi.acm.org/10.1145/1863523.1863542},
 doi = {http://doi.acm.org/10.1145/1863523.1863542},
 acmid = {1863542},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {algebraic data types, combinatorial species},
}