Faye, M.; Gaye, P. A.; Sow, M. M.; Dieng, M.; Tamboura, F. B.; Gruber, N.; Gaye, M. Synthesis, Characterization and Single Crystal X–ray Crystallography of Nd(III) and Pr(III) Complexes With the Tridentate Schiff Base Ligand N’–(1–(pyridin–2–yl)ethylidene)nicotinohydrazide. EJCS 2021, 6, 99-117.