M. Jassim, H., B. B. Ibraheem, and K. Y. Rahawi. “Spectrophotometric Determination of Sodium Nitroprusside by Coupling With Diazotized P-Nitroaniline and Determination of Thermodynamic Parameters”. Rafidain Journal of Science, vol. 22, no. 5, July 2011, pp. 119-28, doi:10.33899/rjs.2011.6525.