Some fixed point theorems of Leggett–Williams type for multivalued mappings and applications to second-order differential inclusions. Electron. J. Appl. Math. [Internet]. 2025 Jun. 20 [cited 2026 Mar. 4];3(2):16-29. Available from: https://ejamjournal.com/index.php/ejam/article/view/ejam.202532104