APA (7th ed.) Citation

Zhang, C., Li, T., & Saker, S. (2013). Oscillation of fourth-order delay differential equations. Нелінійні коливання.

Chicago Style (17th ed.) Citation

Zhang, C., T. Li, and S.H Saker. "Oscillation of Fourth-order Delay Differential Equations." Нелінійні коливання 2013.

MLA (8th ed.) Citation

Zhang, C., et al. "Oscillation of Fourth-order Delay Differential Equations." Нелінійні коливання, 2013.

Warning: These citations may not always be 100% accurate.