@article{1104180438,
author = {Eckmann, J.-P. and Epstein, H.},
title = {Bounds on the unstable eigenvalue for period doubling},
journal = {Comm. Math. Phys.},
volume = {126},
number = {3},
year = {1990},
pages = { 427-435},
language = {en},
url = {http://dml.mathdoc.fr/item/1104180438}
}
Eckmann, J.-P.; Epstein, H. Bounds on the unstable eigenvalue for period doubling. Comm. Math. Phys., Tome 126 (1990) no. 3, pp. 427-435. http://gdmltest.u-ga.fr/item/1104180438/