Ahatov , Alisher, et al. “O-FENILENDIAMIN ASOSIDA ARALASH LIGANDLI KOMPLEKSLAR SINTEZI VA SPEKTROSKOPIK TADQIQOTI”. Theoretical and Experimental Chemistry and Modern Problems of Chemical Technology, vol. 1, no. 01, Nov. 2023, https://ojs.qarshidu.uz/index.php/ch/article/view/40.