1.
Zhang X, Tian H, Wu Y, Wiwatanapataphee B. Existence of positive solutions for third-order semipositone boundary value problems on time scales. NAMC [Internet]. 2022 Dec. 23 [cited 2025 Apr. 27];28(1):133-51. Available from: https://journals.vu.lt./nonlinear-analysis/article/view/30229