MAHMUDS., Birnin-YauriU. A., and LimanM. G. “CHARACTERIZATION OF BIS-SALICYLALDEHYDE O-PHENYLENEDIAMINE SCHIFF BASE AND ITS DY(III), GD(III), ND(III) AND SM(III) LANTHANOIDS COMPLEXES”. FUDMA JOURNAL OF SCIENCES, Vol. 7, no. 1, Feb. 2023, pp. 19 -23, doi:10.33003/fjs-2023-0701-1226.