@article{GDZPPN002182025,
title = {Involutory commutants with some applications to algebraic cryptography. I.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {222},
year = {1966},
pages = {20-43},
zbl = {0168.28204},
url = {http://dml.mathdoc.fr/item/GDZPPN002182025}
}
Levine, Jack; Brawley, Joel V. Involutory commutants with some applications to algebraic cryptography. I.. Journal für die reine und angewandte Mathematik, Tome 222 (1966) pp. 20-43. http://gdmltest.u-ga.fr/item/GDZPPN002182025/