Radiation spectra of laser-driven quantum relativistic electrons. - Guido R. Mocken; Christoph H. Keitel (Comput. Phys. Commun., 2005)

FFT-split-operator code for solving the Dirac equation in 2+1 dimensions. - Guido R. Mocken; Christoph H. Keitel (Comput. Phys. Commun., 2008)

A real space split operator method for the Klein-Gordon equation. - Matthias Ruf; Heiko Bauke; Christoph H. Keitel (J. Comput. Phys., 2009)

Accelerating the Fourier split operator method via graphics processing units. - Heiko Bauke; Christoph H. Keitel (Comput. Phys. Commun., 2011)

Scaling method for the numerical solution of the strong-field ionization problem in the relativistic regime. - Aleksandr V. Boitsov; Karen Z. Hatsagortsyan; Christoph H. Keitel (Comput. Phys. Commun., 2025)