Douglas R. Stinson, Scott A. Vanstone. A Kirkman square of order 51 and block size 3. Discrete Mathematics, 55(1):107-111, 1985. [doi]
@article{StinsonV85,
title = {A Kirkman square of order 51 and block size 3},
author = {Douglas R. Stinson and Scott A. Vanstone},
year = {1985},
doi = {10.1016/S0012-365X(85)80026-1},
url = {http://dx.doi.org/10.1016/S0012-365X(85)80026-1},
researchr = {https://researchr.org/publication/StinsonV85},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {55},
number = {1},
pages = {107-111},
}