@misc{EhrhardtZisowsky2005, author = {Matthias Ehrhardt and Andrea Zisowsky}, title = {Discrete non-local boundary conditions for Split-Step Pad{\´e} Approximations of the One-Way Helmholtz Equation}, institution = {Technische Universit{\"a}t Berlin}, type = {preprintmatheon}, year = {2005}, }