Fayzullaev, A., Astanov, S. and Ergasheva, N. (2018) “APPLICATION OF SPECTROSCOPY IN THE PROCESS OF OBTAINING DYES FROM ONION PELL”., Eurasian Physical Technical Journal, 15(2(30), pp. 128–132. Available at: https://phtj.buketov.edu.kz/EPTJ/article/view/531 (Accessed: 18 March 2026).