@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/