Haque, Zeba and Thakur, Gohil Singh and Parthasarathy, Rangasamy and Gerke, Birgit and Block, Theresa and Heletta, Lukas and Pottgen, Rainer and Joshi, Amish G. and Selvan, Ganesan Kalai and Arumugam, Sonachalam and Gupta, Laxmi Chand and Ganguli, Ashok Kumar (2017) Unusual Mixed Valence of Eu in Two Materials-EuSr2Bi2S4F4 and Eu2SrBi2S4F4: Mossbauer and X-ray Photoemission Spectroscopy Investigations. Inorganic Chemistry, 56 (6). pp. 3182-3189. ISSN 0020-1669