@article{1077472373,
author = {Wall, H. S. and Wetzel, Marion},
title = {Quadratic forms and convergence regions for continued fractions},
journal = {Duke Math. J.},
volume = {11},
number = {1},
year = {1944},
pages = { 89-102},
language = {en},
url = {http://dml.mathdoc.fr/item/1077472373}
}
Wall, H. S.; Wetzel, Marion. Quadratic forms and convergence regions for continued fractions. Duke Math. J., Tome 11 (1944) no. 1, pp. 89-102. http://gdmltest.u-ga.fr/item/1077472373/