In this paper we present new criteria for asymptoticproperties of the solutions of the third order delay differentialequation$$\left( \frac1{r(t)}y''(t)\right)'-p(t)y'(t)+g(t)y(\tau(t))= 0,$$by transforming this equation to its binomial canonical form.
@article{13, title = {Asymptotic properties of trinomial delay differential equations}, journal = {Tatra Mountains Mathematical Publications}, volume = {43}, year = {2009}, doi = {10.2478/tatra.v43i0.13}, language = {EN}, url = {http://dml.mathdoc.fr/item/13} }
Džurina, Josef; Kotorová, Renáta. Asymptotic properties of trinomial delay differential equations. Tatra Mountains Mathematical Publications, Tome 43 (2009) . doi : 10.2478/tatra.v43i0.13. http://gdmltest.u-ga.fr/item/13/