Citation: Esmaeilzadeh, Saeid; Grins, Jekabs; Shen, Zhijian; Ed\'en, Mattias; Thiaux, Marie (2004). Study of Sialon S-phases M~2~Al~x~Si~12-x~N~16-x~O~2+x~, M = Ba and Ba~0.9~Eu~0.1~, by X-ray Single Crystal Diffraction, X-ray Powder Diffraction, and Solid-State Nuclear Magnetic Resonance. Chemistry of Materials, 16, pp. 2113-2120.