Imambekov, O., and Z. Toksaba. “Calculation of Matrix Elements of π± -Meson Scattering by He Isotopes in the Glauber Theory”. Recent Contributions to Physics, vol. 57, no. 2, Apr. 2016, pp. 98-105, https://bph.kaznu.kz/index.php/zhuzhu/article/view/926.