@article{1102806644,
author = {Keynes, H. B. and Newton, D.},
title = {Minimal $(G,\,\tau)$-extensions.},
journal = {Pacific J. Math.},
volume = {79},
number = {2},
year = {1978},
pages = { 145-163},
language = {en},
url = {http://dml.mathdoc.fr/item/1102806644}
}
Keynes, H. B.; Newton, D. Minimal $(G,\,\tau)$-extensions.. Pacific J. Math., Tome 79 (1978) no. 2, pp. 145-163. http://gdmltest.u-ga.fr/item/1102806644/