1. A Criterion for the Existence of the Unique Periodic Solution of One-Dimensional Periodic Differential Equation. (22nd April 2021) Authors: Hua, Ni Other Names: Isik Huseyin Academic Editor. Journal: Journal of mathematics Issue: Volume 2021(2021) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗