1. Intel 432 GDP Architecture Reference Manual Intel Corporation 1981. Intel 432 GDP Architecture Reference Manual Intel Corporation 1981.
2. IBM System/38 Technical Developments International Business Machines Corporation 1978. IBM System/38 Technical Developments International Business Machines Corporation 1978.
3. D. M. England "Architectural Features of System 250 " pp. 395-428 in Infotech State of the Art Report 14: Operating Systems Infotech International Ltd. Maidenhead Berkshire England (1972). D. M. England "Architectural Features of System 250 " pp. 395-428 in Infotech State of the Art Report 14: Operating Systems Infotech International Ltd. Maidenhead Berkshire England (1972).
4. HYDRA
5. W. Wulf R. Levin and S. Harbison Hydra: C.mmp: An Experimental Computer System McGraw-Hill Book Company (1981). W. Wulf R. Levin and S. Harbison Hydra: C.mmp: An Experimental Computer System McGraw-Hill Book Company (1981).