“Batch and Flow-Injection Spectrophotometric Determination of Thymol Using Procaine Hydrochloride As a New Chromogenic Reagent”. Baghdad Science Journal 9, no. 2 (June 3, 2012): 302–310. Accessed May 4, 2024. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1364.