Myra B. Cohen, Charles J. Colbourn, Lee A. Ives, Alan C. H. Ling. Kirkman triple systems of order 21 with nontrivial automorphism group. Math. Comput., 71(238):873-881, 2002.
@article{CohenCIL02,
title = {Kirkman triple systems of order 21 with nontrivial automorphism group},
author = {Myra B. Cohen and Charles J. Colbourn and Lee A. Ives and Alan C. H. Ling},
year = {2002},
tags = {C++},
researchr = {https://researchr.org/publication/CohenCIL02},
cites = {0},
citedby = {0},
journal = {Math. Comput.},
volume = {71},
number = {238},
pages = {873-881},
}