Zhang, F., & Yan, J. Resonance and Nonresonance Periodic Value Problems of First-Order Differential Systems. Wiley.
Chicago Style (17th ed.) CitationZhang, Fengqin, and Jurang Yan. Resonance and Nonresonance Periodic Value Problems of First-Order Differential Systems. Wiley.
MLA (9th ed.) CitationZhang, Fengqin, and Jurang Yan. Resonance and Nonresonance Periodic Value Problems of First-Order Differential Systems. Wiley.
Warning: These citations may not always be 100% accurate.