Kar, R., N. Azam, and M. C. Chattopadhyaya. “Determination of Stability Constant of 1:1 lanthanum(III)¬chromotrope-2B Complex by a Graphical Method Using Novel Membrane and Coated Wire Electrodes”. Bulletin of the Chemical Society of Ethiopia, vol. 6, no. 2, July 2012, doi:10.4314/bcse.v6i2.