Paukštaitė, Gailė, and Artūras Štikonas. “The Minimizer for the Second Order differential Problem With One Nonlocal Condition”. Lietuvos matematikos rinkinys 58, no. A (December 23, 2017): 28–33. Accessed April 27, 2024. https://www.journals.vu.lt/LMR/article/view/14972.