Berry, F. J. (1 February 1959). "Intercode, a Simplified Coding Scheme for AMOS". The Computer Journal. 2 (2). AMOS - Ferranti Mark I*: 55–58. doi:10.1093/comjnl/2.2.55. ISSN0010-4620.
Berry, F. J. (1 February 1959). "Intercode, a Simplified Coding Scheme for AMOS". The Computer Journal. 2 (2). AMOS - Ferranti Mark I*: 55–58. doi:10.1093/comjnl/2.2.55. ISSN0010-4620.