@article{102438,
author = {Ji\v r\'\i\ Rach\r unek},
title = {Convex directed subgroups of right ordered tree groups},
journal = {Czechoslovak Mathematical Journal},
volume = {41},
year = {1991},
pages = {99-103},
zbl = {0803.06020},
mrnumber = {1087628},
language = {en},
url = {http://dml.mathdoc.fr/item/102438}
}
Rachůnek, Jiří. Convex directed subgroups of right ordered tree groups. Czechoslovak Mathematical Journal, Tome 41 (1991) pp. 99-103. http://gdmltest.u-ga.fr/item/102438/
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