1. “The synthesis and thermodynamic properties of strontium fluoromanganite Sr2.5Mn6O12.5-F2”. Kovba ML, Skolis YY, Abakumov AM, Hadermann J, Sukhushina IS, Russian journal of physical chemistry A 84, 2033 (2010).   http://doi.org/10.1134/S0036024410120046