Ismagilov, I. Z., et al. “Effect of Preparation Mode on the Properties of Mn-Na-W SiO2 Catalysts for Oxidative Coupling of Methane: Conventional Methods Vs. POSS Nanotechnology”. Eurasian Chemico-Technological Journal, vol. 18, no. 2, May 2016, pp. 93-110, doi:10.18321/ectj430.