@article{GDZPPN001177311,
title = {On the Numerical Treatment of a Small Divisor Problem.},
journal = {Numerische Mathematik},
volume = {39},
year = {1982},
pages = {269-292},
zbl = {0497.65047},
url = {http://dml.mathdoc.fr/item/GDZPPN001177311}
}
Zehnder, E.; Braess, D. On the Numerical Treatment of a Small Divisor Problem.. Numerische Mathematik, Tome 39 (1982) pp. 269-292. http://gdmltest.u-ga.fr/item/GDZPPN001177311/