@article{heunen:elltwo, title = "On the functor l2", author = "Chris Heunen", year = "2012", booktitle = "Computation, Logic, Games, and Quantum Foundations", editor = "Bob Coecke and Luke Ong and Prakash Panangaden", pages = "107-121", url = "http://arxiv.org/abs/1012.4526", doi = "10.1007/978-3-642-38164-5_8", }