RAYIMOV FARHOD. “IN TURKISTAN COLLECTION REFLECTION OF L. V. VYATKINS INFORMATION ABOUT THE OPENING OF THE MIRZO ULUGBEK OBSERVATORY”. JournalNX - A Multidisciplinary Peer Reviewed Journal, vol. 6, no. 06, Feb. 2021, pp. 144-7, https://repo.journalnx.com/index.php/nx/article/view/1219.