Bony, Jean-François, Vincent Bruneau, Philippe Briet, and Georgi Raikov. 2009. “Resonances and SSF Singularities for Magnetic Schrödinger Operators”. CUBO, A Mathematical Journal 11 (5):23–38. https://www.perspectivasdelacomunicacion.cl/ojs/index.php/cubo/article/view/1441.