%0 Conference Proceedings %F hutchins2010 %A Hutchins, DeLesley S. %T Pure subtype systems %B POPL '10: Proceedings of the 37th annual ACM SIGPLAN-SIGACT symposium on Principles of programming languages %P 287-298 %I ACM %C New York, NY, USA %U http://www.diku.dk/hjemmesider/ansatte/henglein/papers/hutchins2010.pdf %U http://doi.acm.org/10.1145/1706299.1706334 %D 2010 %K typetheory