Suerbaev, Kh., K. Kanybetov, and G. Zhaksylikova. 2011. “Sedative and Spasmolytic Drugs Ethyl Ether of α– Bromisovaleric Acid and Corvalolum”. Chemical Bulletin of Kazakh National University 61 (1), 205-9. https://bulletin.chemistry.kz/index.php/kaznu/article/view/896.