1. Abrial, J.R., The Specification Language Z: Basic Library, Oxford University Programming Research Group, Specification Group Working Paper, 1980
2. Ada Language Reference Manual ANSI/Mil.Std 1815A, Alsys, Jan 1983
3. AFFIRM Reference Library, 5 Volumes: Lee, S. and Gerhart, S.L. (eds.), AFFIRM User's Guide Erickson, R.W. (ed.), AFFIRM Collected Papers
4. Thompson, D.H. and Erickson, R.W. (eds.), AFFIRM Reference Manual
5. Bates, R.L. and Gerhart, S.L. (eds.), AFFIRM Annotated Transcripts