H. East, Seeing how it grows, Journal of Information Science10 (1985) 39-41.
2.
E. Garfield , Continuing relevance of random superimposed coding (Letter to the Editor), Journal of Information Science9 (1984) 181.
3.
C.N. Mooers , Zatocoding applied to the mechanical organisation of knowledge, American Documentation2 (January, 1951) 20-32.
4.
A.E. Cawkell , Classification and retrieval of technical information. 1. Considerations leading to the choice of edge notched cards, Wireless World68 (1962) 352-357.
5.
A.E. Cawkell , Classification and retrieval of technical information. 2. The notched card system in practice, Wireless World68 (1962) 432-434.
