Pérez-Salas, R., M, T., Aceves, R., Rodríguez -Mijangos, R., & Barboza-Flores, M. (2003). Optical vibronic spectra of aggregates in Eu$^{\mathbf2+}$ -doped KCl and KBr crystals. Revista Mexicana De Física, 49(2), 102–0. Retrieved from https://rmf.smf.mx/ojs/index.php/rmf/article/view/3139