Avkhunbayeva, G., Y. Aimuratov, and A. Umiralieva. “THE DEFLECTION OF LIGHT RAYS IN THE GALAXIES’ HALOS OF DARK MATTER”. Recent Contributions to Physics, vol. 2011, no. 3, Oct. 2017, pp. 59-67, https://bph.kaznu.kz/index.php/zhuzhu/article/view/978.