Wang C. Ritz solution of the Helmholtz equation in a stadium-shaped domain with zero normal derivatives – applications to fluid sloshing and thermo-convective stability. Arch. Mech. [Internet]. 2017 Dec. 31 [cited 2026 Mar. 3];69(6):471-83. Available from: http://am.ippt.gov.pl/index.php/am/article/view/v69p471