Kadhim Hussein Serih, and Maha Abd Alkadhim Abd. “Development Indirect Spectrophotometric Method for Measurement Lead in Al-Zn-Pb Ingot by Using Eriochrome Black T”. Journal of Kufa for Chemical Sciences, vol. 2, no. 8, Jan. 2023, pp. 225-33, https://journal.uokufa.edu.iq/index.php/jkcs/article/view/11080.