L. Chávez-Guerrero, M. Hinojosa-Rivera, B. Medina-Lott, R.-N. Vannier, A. Ringuedé, and M. Cassir, Synthesis and characterization of Co-doped Lanthanum Nickelate perovskites for solid oxide fuel cell cathode material, Rev. Mex. Fís. 63, (2017).