Rodrigues, Érica A. C.; de Siqueira, A. B.; Ionashiro, E. Y.; Bannach, G.; Ionashiro, M. Synthesis, Characterization and Thermal Behaviour of Solid-State Compounds of 4-Methoxybenzoate With Lanthanum (III) and Trivalent Lighter Lanthanides. Eclet. Quim. 2006, 31, 21-30.