Matveyeva, Ilona, Nurgul Nursapina, Tamara Tuzova, and Balnur Shynybek. “Isotopes of Uranium in Waters and Ice of Pamir–Alai”. Chemical Bulletin of Kazakh National University, no. 3 (September 29, 2018): 20-27. Accessed June 26, 2019. https://bulletin.chemistry.kz/index.php/kaznu/article/view/1006.