@article{GDZPPN002222752,
title = {Stability and Non-Linear Approximation for y' (t) = - f(y(t-1)).},
journal = {Manuscripta mathematica},
volume = {31},
year = {1980},
pages = {249-268},
zbl = {0435.34064},
url = {http://dml.mathdoc.fr/item/GDZPPN002222752}
}
Doden, Klaus. Stability and Non-Linear Approximation for y' (t) = - f(y(t-1)).. Manuscripta mathematica, Tome 31 (1980) pp. 249-268. http://gdmltest.u-ga.fr/item/GDZPPN002222752/