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]
@article{GavrilyukM12,
title = {Distance-regular graphs with intersection arrays {52, 35, 16; 1, 4, 28} and {69, 48, 24; 1, 4, 46} do not exist},
author = {Alexander L. Gavrilyuk and Alexander A. Makhnev},
year = {2012},
doi = {10.1007/s10623-012-9695-1},
url = {http://dx.doi.org/10.1007/s10623-012-9695-1},
researchr = {https://researchr.org/publication/GavrilyukM12},
cites = {0},
citedby = {0},
journal = {Des. Codes Cryptography},
volume = {65},
number = {1-2},
pages = {49-54},
}