Flavio D Alessandro. Free Groups of Quaternions. IJAC, 14(1):69-86, 2004. [doi]
@article{DAlessandro04:0,
title = {Free Groups of Quaternions},
author = {Flavio D Alessandro},
year = {2004},
doi = {10.1142/S0218196704001669},
url = {http://dx.doi.org/10.1142/S0218196704001669},
researchr = {https://researchr.org/publication/DAlessandro04%3A0},
cites = {0},
citedby = {0},
journal = {IJAC},
volume = {14},
number = {1},
pages = {69-86},
}