@inproceedings{Kilpatrick:2014:BRH:2535838.2535884,
 author = {Kilpatrick, Scott and Dreyer, Derek and Peyton Jones, Simon and Marlow, Simon},
 title = {Backpack: Retrofitting Haskell with Interfaces},
 booktitle = {Proceedings of the 41st ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages},
 series = {POPL '14},
 year = {2014},
 isbn = {978-1-4503-2544-8},
 location = {San Diego, California, USA},
 pages = {19--31},
 numpages = {13},
 url = {http://doi.acm.org/10.1145/2535838.2535884},
 doi = {10.1145/2535838.2535884},
 acmid = {2535884},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {applicative instantiation, haskell modules, mixin modules, module systems, packages, recursive modules, separate modular development, type systems},
} 
