Al-Samarra’ay, S. S.; Al-Hitti, I. K.; Al-oubaydi, O. H. Spectrophotometric and Potentiometric Analysis of Calcichrome and Its Complex With Calcium Ion. IHJPAS 2018, 2017 (IHSCICONF), 321-329. https://doi.org/10.30526/2017.IHSCICONF.1801.