Khizirova, M.A., and P.T. Grigor’eva. “Research of Radio-Frequency Weights – Spectrometers”. Recent Contributions to Physics 2012, no. 1 (March 25, 2012): 61–63. Accessed February 8, 2026. https://bph.kaznu.kz/index.php/zhuzhu/article/view/682.