Separation of Variables for Systems of First-Order Partial Differential Equations and the Dirac Equation in Two-Dimensional Manifolds

Mclenaghan, R. G., & Rastelli, G. (2008). Separation of Variables for Systems of First-Order Partial Differential Equations and the Dirac Equation in Two-Dimensional Manifolds (pp. 471–496). https://doi.org/10.1007/978-0-387-73831-4_25