1. Ambler, S., Crole, R.L.: Mechanized operational semantics via (co)induction. In: Bertot, Y., Dowek, G., Hirschowitz, A., Paulin-Mohring, C., Théry, L. (eds.) TPHOLs’99, Volume 1690 of Lecture Notes in Computer Science, pp. 221–238. Springer, Nice (1999)
2. Anand, A., Rahli, V.: Towards a formally verified proof assistant. In: Klein, G., Gamboa, R. (eds.) ITP 2014, Volume 8558 of Lecture Notes in Computer Science, pp. 27–44. Springer, Vienna (2014)
3. Aydemir, B., Bohannon, A., Fairbairn, M., Foster, J.N., Pierce, B.C., Sewell, P., Vytiniotis, D., Washburn, G., Weirich, S., Zdancewic, S.: Mechanized metatheory for the masses: the PoplMark challenge. In: TPHOLs, pp. 50–65 (2005)
4. Aydemir, B.E., Weirich, S.: LNgen: tool support for locally nameless representations. Technical report, University of Pennsylvania (2010)
5. Baelde, D., Chaudhuri, K., Gacek, A., Miller, D., Nadathur, G., Tiu, A., Wang, Y.: Abella: a system for reasoning about relational specifications. J. Formaliz. Reason. 7(2), 1–89 (2014)