PREPARATION, STRUCTURE, AND ELECTRICAL CONDUCTIVITY OF LA(GA,MN)O 3 CERAMICS Статья Polteva T.V., Venskovskii N.U., Kaleva G.M., Mosunov A.V., Prutchenko S.G., Politova E.D. Inorganic Materials. Том 40. 2004. С. 80-85