COMPREHENSIVE BAND GAP AND ELECTRONIC STRUCTURE INVESTIGATIONS OF THE PROMINENT PHOSPHORS M2SI5N8:EU2+(M = CA, SR, BA) DETERMINED USING SOFT X-RAY SPECTROSCOPY AND DENSITY FUNCTIONAL THEORY СтатьяTolhurst T.M., Moewes A., Braun C., Schnick W.Журнал физической химии С. Том 125. 2021. С. 25799-25806