1. A directly coupled adder designed for use in a digital differential analyser;BOULTER;J. Brit. I.R.E.,1962
2. The principles of integrated single crystal circuit design;ALLEN;Electronics Reliability and Micro-miniaturisation,1962
3. Application of micrologic elements;FARINA;Proc. Nat. Electronics Con.,1960
4. P. M. THOMPSON, British Pat. Application No. 24222/61.
5. R. H. BEESON and H. W. RUEGG, New forms of all transistor logic. Digest of Technical Papers, p. 10. International Solid State Circuits Conference, Philadelphia 1962.