S. Al-Kalissy R, K. Mohammed A. Spectrophotometric Method for the Determination of Tetracycline and Doxycycline by Oxidizing Coupling Reaction with 4-aminoantipyrine. IHJPAS [Internet]. 2017 Mar. 14 [cited 2025 May 1];28(3):154-68. Available from: https://www.jih.uobaghdad.edu.iq/index.php/j/article/view/150