Hossain, Md. Belayet, M Saidul Islam, M Rafiqul Islam, Md. Abdus Salam, and M. Abu Yousuf. 2013. “Synthesis And Characterization Of Mixed Ligand Complexes Of Co(Ii) And Fe(Iii) Ions With Maleic Acid And Heterocyclic Amines”. Journal of the Bangladesh Chemical Society 25 (2):139-45. https://doi.org/10.3329/jbcs.v25i2.15066.