@unpublished{HiHaJa12,
	author = {Hinze, Ralf and Hackett, Jennifer and James, Daniel W. H.},
	month = {March},
	note = {Submitted to ICFP '12},
	title = {Functional Pearl: F for Functor},
	url = {http://www.cs.ox.ac.uk/people/daniel.james/functor.html},
	year = {2012}
}