Raman scattering efficiency in LiTaO3 and LiNbO3 crystals
S. Sanna, S. Neufeld, M. Rüsing, G. Berth, A. Zrenner, W.G. Schmidt, Physical Review B 91 (2015).

Vibrational Fingerprints of LiNbO3-LiTaO3Mixed Crystals
S. Sanna, A. Riefer, S. Neufeld, W.G. Schmidt, G. Berth, M. Rüsing, A. Widhalm, A. Zrenner, Ferroelectrics 447 (2013) 63–68.