M. M. Alam, R. Saha, M. R. Miah, B. Ahmed, and I. A. Siddiquey, “Spectroscopic Characterization of Croconate Bridging Complex: Conversion of Rhodizonate (C6O6 2-) to Croconate Bridging Ligand in a Pyridine Modified Large Macrocyclic Metal Arrangements”, J Bangladesh Acad Sci, vol. 40, no. 2, pp. 101–108, Dec. 2016.