Brian E. Aydemir, Arthur Charguéraud, Benjamin C. Pierce, Randy Pollack, Stephanie Weirich. Engineering formal metatheory. In George C. Necula, Philip Wadler, editors, Proceedings of the 35th ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages, POPL 2008, San Francisco, California, USA, January 7-12, 2008. pages 3-15, ACM, 2008. [doi]