M. Bonotto,  D. Abate,  P. Bettini & F. Villone. (2021). A Coupled FEM-BEM Approach for the Solution of the Free-Boundary Axi-Symmetric Plasma Equilibrium Problem.
            <i>Communications in Computational Physics</i>. <i>31</i> (1).
            27-59.
         doi:10.4208/cicp.OA-2021-0062