Wiedemann, Johannes. “Higher-Order Exponential Integrators for Constrained Semi-Linear Parabolic Problems”. GAMM Archive for Students 2, no. 1 (February 16, 2020): 14–20. Accessed April 18, 2024. https://www.bibliothek.tu-chemnitz.de/ojs/index.php/GAMMAS/article/view/421.