Mihóková, E., Nagirnyi, V., Nikl, M., Stolovich, A., Pazzi, G.P., Zazubovich, S., Zepelin, V. Relaxed excited state structure and luminescence of thallium-doped caesium chloride and bromide. Journal of Physics-Condensed Matter. 1996, 8(-), 4301-4314. ISSN 0953-8984. E-ISSN 1361-648X.