V. I. Fomin, V. P. Gnezdilov, V. S. Kurnosov, A. V. Peschanskii, V. V. Eremenko, J.-P. Rivera, and S. Gentil, Light scattering in LiCoPO₄ single crystal: analysis of the vibrational spectrum, Low Temp. Phys. 25, (1999) [Fiz. Nizk. Temp. 25, 1107-1111, (1999)] DOI: https://doi.org/10.1063/1.593827.