Cyrus Omar, Ian Voysey, Michael Hilton, Jonathan Aldrich, Matthew A. Hammer. Hazelnut: a bidirectionally typed structure editor calculus. In Giuseppe Castagna, Andrew D. Gordon, editors, Proceedings of the 44th ACM SIGPLAN Symposium on Principles of Programming Languages, POPL 2017, Paris, France, January 18-20, 2017. pages 86-99, ACM, 2017. [doi]