1. Alonzo Church. A formulation of the simple theory of types. Journal of Symbolic Logic, 5:56–68, 1940.
2. PhD thesis;A. Compagnoni,1995
3. M. J. C. Gordon. Notes on PVS from a HOL perspective. Available from the University of Cambridge Computer Laboratory web server.
4. M. J. C. Gordon and T. F. Melham. Introduction to HOL (A theorem-proving environment for higher order logic). Cambridge University Press, 1993.
5. Lect Notes Comput Sci;J. Harrison,1996