Rendón, P., Le, E. and -Koo. (2015) “Complete sets of circular, elliptic and bipolar harmonic vortices on a plane”, Revista Mexicana de Física, 61(3), pp. 196–0. Available at: https://rmf.smf.mx/ojs/index.php/rmf/article/view/4142 (Accessed: 20 August 2026).