Synthesis and Characterization of Six Novel Samarium (III) Complexes with L-aspartic Acid, L-glutamic Acid, Glycine and O-phenanthroline, Bipiridile as Ligands oleh E. Cardozo, RR. Contreras, F. Bellandi, A. Lopez-Rivera, J. Avendaño, C. Araque, J. Vielma