Toon, R. C., E. C. Preedy, and P. Prokopovich. “Formulating Drugs for Inhalers and Stability Issues”. Eurasian Chemico-Technological Journal 14, no. 4 (November 15, 2012): 271–286. Accessed November 24, 2024. https://ect-journal.kz/index.php/ectj/article/view/410.