Kamocki, Rafał. “Necessary Optimality Conditions for Lagrange Problems Involving Ordinary Control Systems Described by Fractional Laplace Operators”. Nonlinear Analysis: Modelling and Control 25, no. 5 (September 1, 2020): 884–901. Accessed May 4, 2024. https://www.journals.vu.lt/nonlinear-analysis/article/view/19279.