1. S.A. Aseeri, “Goursat Functions for A Problem of An Isotropic Plate with A Curvilinear Hole,” in International Journal for Open Problems Computer Mathematic 1, 266–285 (2008).
2. T. Calvin, “The Goursat Problem for the Einstein-Vlasov System: (I) The Initial Data Constraints,” in C. R. Math. Rep. Acad. Sci. Canada 36, 20–32 (2014).
3. J. C. Strikwerda, Finite difference schemes and partial differential equations (2nd Ed) (Society for Industrial and Applied Mathematics (SIAM), Pacific Grove, 2004)
4. L.G. Bushnell, D. Tilbury and S.S. Sastry, “Extended Goursat Normal Form With Application to Nonholonomic Motion Planning,” in the Electronic Research Laboratory, University of California, 1–12 (1994).
5. I. G. O. Mamedov, “3D Goursat Problem in the Non-Classical Treatment for Manjeron Generalized Equation with Non-Smooth Coefficients,” in Applied and Computational Mathematics 4, 1–5 (2015).