CAHYANA, U.; RUSDIARSO, B.; NARSITO, N. SYNTHESIS OF 1,9-BIS [1-PHENYL-3-METHYL-5-HYDROXY-4-PYRAZOLYL] 1,9 NONANEDIONE AND ITS APPLICATION FOR THE EXTRACTION OF COBALT ( II), NICKEL (II), AND CADMIUM (II). Jurnal Riset Sains dan Kimia Terapan, v. 2, n. 2, p. 200 - 206, 14 Mar. 2017.