1. On the nonexistence of close-packed double hamming-error-correcting codes on q = 7 symbols;Alter;J. Comp. and Syst. Sci.,1968
2. On the nonexistence of perfect double hamming-error-correcting codes on q = 8 and q = 9 symbols;Alter;Inform. Control,1968
3. Cyclic Codes;Assmus;Report AFCRL-66-348 of the Applied Research Laboratory of Sylvania Electronic Systems,1966
4. Algebraic Coding Theory;Berlekamp,1968
5. A note on perfect double error-correcting codes on q symbols;Cohen;Inform. Control,1964