Quasiparticle energies and optical response of RbTiOPO4 and KTiOAsO4
S. Neufeld, A. Schindlmayr, W.G. Schmidt, Journal of Physics: Materials 5 (2022).

Potassium titanyl phosphate (KTP) quasiparticle energies and optical response
S. Neufeld, A. Bocchini, U. Gerstmann, A. Schindlmayr, W.G. Schmidt, Journal of Physics: Materials 2 (2019) 045003.