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Journal of Combinatorial Theory, Series A > 2008 > 115 > 5 > 753-776
Designs, Codes and Cryptography > 2007 > 44 > 1-3 > 209-216
Journal of Combinatorial Theory, Series A > 2008 > 115 > 5 > 753-776
Designs, Codes and Cryptography > 2007 > 44 > 1-3 > 209-216