@article{1181072631,
author = {Wong, P.C.},
title = {Subgroup Separability of Certain HNN Extensions},
journal = {Rocky Mountain J. Math.},
volume = {24},
number = {1},
year = {1993},
pages = { 391-394},
language = {en},
url = {http://dml.mathdoc.fr/item/1181072631}
}
Wong, P.C. Subgroup Separability of Certain HNN Extensions. Rocky Mountain J. Math., Tome 24 (1993) no. 1, pp. 391-394. http://gdmltest.u-ga.fr/item/1181072631/