The Charles Babbage Institute Reprint Series for the History of Computing.

Martin Campbell-Kelly The Charles Babbage Institute Reprint Series for the History of Computing. 44-48 2001 23 IEEE Annals of the History of Computing 4 http://doi.ieeecomputersociety.org/10.1109/85.969962 db/journals/annals/annals23.html#Campbell-Kelly01