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 2024 May 14];28(1):133-51. Available from: https://www.journals.vu.lt/nonlinear-analysis/article/view/30229