Distance-regular graphs with intersection arrays {52, 35, 16; 1, 4, 28} and {69, 48, 24; 1, 4, 46} do not exist

Alexander L. Gavrilyuk, Alexander A. Makhnev. Distance-regular graphs with intersection arrays {52, 35, 16; 1, 4, 28} and {69, 48, 24; 1, 4, 46} do not exist. Des. Codes Cryptography, 65(1-2):49-54, 2012. [doi]

Abstract

Abstract is missing.