1. Abou-El-Ela, A. M. A., Sadek, A. I.: On the stability of solutions for certain second-order stochastic delay differential equations. Ann. Differen. Equat 6, 131–141 (1990)
2. Abou-El-Ela, A.M.A., Sadek, A.I., Mahmoud, A.M.: On the stability of solutions for certain second-order stochastic delay differential equations. Differ. Eqs. Control Process. 2, 1–13 (2015)
3. Ademola, A.T., Ogundare, B.S., Ogundiran, M.O., Adesina O.A.: Periodicity, stability, and boundedness of solutions to certain second order delay differential equations. Int. J. Differ. Eqs. 2016, Article ID 2843709 , 1-10, (2016)
4. Ademola, A.T.: Boundedness and stability of solutions to certain second order differential equations. Differ. Eqs. Control Process. 3, 38–50 (2015)
5. Adeyanju, A.A.: Existence of a limiting regime in the sense of demidovic for a certain class of second order non-linear vector differential equation. Differ. Eq. Control process. 4, 63–79 (2018)