Karbowiak, Mirosław Comment on the crystal-field analysis underlying "Breakdown of crystallographic site symmetry in lanthanide-doped NaYF4 crystals". [electronic resource] - Angewandte Chemie (International ed. in English) Jan 2015 - 1074-6 p. digital Publication Type: Comment; Letter ISSN: 1521-3773 Standard No.: 10.1002/anie.201408640 doi