1. Anon.: E.M.I. electronics exhibition. Process Control Autom. 6, 22–24 (1959a).
2. Anon.: News from manufacturers. Comput. Bull., 35 (1959b).
3. Anon.: Oilfield studies by computer. The Times 1962(55556), Nov 23th (1962a).
4. Anon.: Oilwell optimum production programmes. Comput. Bull., 151 (1963b).
5. Augarten, S.: Bit by Bit: An Illustrated History of Computers. Allen and Unwin, London (1985).