Мукашев, К., Г. Яр-Мухамедова, and А. Мурадов. “Radiation Damage Alloys Ti-Ge and Positron Annihilation”. Recent Contributions to Physics, vol. 56, no. 1, Feb. 2016, pp. 98-104, https://bph.kaznu.kz/index.php/zhuzhu/article/view/445.