Méndez-González, Y., 		Peláiz-Barranco, A., 		Calderón-Piñar, F., AND 		Castellanos-Guzmán, A. G..
"Rare Earth Modified Lead Titanate; Incorporation into A- and/or B-sites in the Perovskite Structure" <em>Revista Cubana de Física</em> [Online], Volume 27 Number 2B (15 December 2010)