@article{GDZPPN002442450,
title = {Open subgroups and Pontryagin duality.},
journal = {Mathematische Zeitschrift},
volume = {217},
year = {1994},
pages = {195-204},
zbl = {0790.22001},
url = {http://dml.mathdoc.fr/item/GDZPPN002442450}
}
Banaszczyk, W.; Chasco, M.J. Open subgroups and Pontryagin duality.. Mathematische Zeitschrift, Tome 217 (1994) pp. 195-204. http://gdmltest.u-ga.fr/item/GDZPPN002442450/