TRÎMBIȚAȘ, Maria Gabriela, and Radu T. TRÎMBIȚAȘ. 2015. “Finding Initial Solutions for a Class of Nonlinear BVP”. Studia Universitatis Babeș-Bolyai Mathematica 60 (2):319-27. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5745.