MAHMUD, S.; Birnin-Yauri, U. A.; Liman, M. G. CHARACTERIZATION OF BIS-SALICYLALDEHYDE O-PHENYLENEDIAMINE SCHIFF BASE AND ITS DY(III), GD(III), ND(III) AND SM(III) LANTHANOIDS COMPLEXES. FJS 2023, 7, 19 - 23.