Synthesis and characterization of "LiFePO IND.4" prepared by sol-gel technique - Sánchez, M A E; Brito, Giancarlo Espósito de Souza; Fantini, Márcia Carvalho de Abreu; Goya, Gerardo Fabían; Matos, Jivaldo do Rosário (Solid State Ionics, 2006)