1. Algebraic Coding Theory;Berlekamp,1968
2. Coding theory and the Mathieu groups;Berlekamp;Information and Control,1971
3. Goethals, J. M. (1971), unpublished correspondence.
4. A theorem of the distribution of weights in a systematic code;MacWilliams;Bell Syst. Tech. J.,1963
5. note in JPL Deep Space Net Progress report;Mykkeltvrit,1972