Trepakov, V. A., Vikhnin, V. S., Eden, S., Kapphan, S., Hesse, H., Seglins, J., Jastrabík, L. - Novák, J. Optical spectra of BaTiO3:Cr. Journal of the Korean Physical Society. 1998, 32(-), S1113-S1115. ISSN 0374-4884. E-ISSN 1976-8524.