Spectral deformations of Jacobi operators. Gerald Teschl — 1997 Journal für die reine und angewandte Mathematik
On classical solutions of the relativistic Vlasov-Klein-Gordon system. Kunzinger, Michael; Rein, Gerhard; Steinbauer, Roland; Teschl, Gerald — 2005 Electronic Journal of Differential Equations (EJDE) [electronic only]