1. A Decimal Addition-Subtraction Unit;ALLEN;Proc. IEE,1956
2. A General Method of Applying Error Correction to Synchronous Systems;ARMSTRONG;B.S.T.J.,1961
3. ASHENHURST R.L. (1959) The Decomposition of Switching Functions, Proc. of an International Symposium on the Theory of Switching, Harvard University Press, Cambridge, I, 74.
4. Reliability of an Air Defense Computing System: Marginal Checking and Maintenance Programming;ASTRAHAN;Trans. IRE,1956
5. The Laws of Thought;BOOLE,1954