АkhmetkarimovaZh., D. Zhienbaeva, S. Fazylov, and NurkenovО. 2011. “Synthesis of Thioamides on the Basis of Biogenic Amines, Aromatic Aldehydes and Sulfur”. Chemical Bulletin of Kazakh National University 61 (1), 337-40. https://chemistry.kz/bulletin/index.php/kaznu/article/view/933.