@article{1250131655,
author = {Hassett, Matthew J.},
title = {A closure property of regressive isols},
journal = {Rocky Mountain J. Math.},
volume = {2},
number = {4},
year = {1972},
pages = { 1-24},
language = {en},
url = {http://dml.mathdoc.fr/item/1250131655}
}
Hassett, Matthew J. A closure property of regressive isols. Rocky Mountain J. Math., Tome 2 (1972) no. 4, pp. 1-24. http://gdmltest.u-ga.fr/item/1250131655/