Marina Ishchenko, Margarita Sobolenko, Kalambay Mukhagali, Shukirgaliyev Bekdaulet, и Peter Berczik. 2021. «MILKY WAY GLOBULAR CLUSTERS: CLOSE ENCOUNTER RATES WITH EACH OTHER AND WITH THE CENTRAL SUPERMASSIVE BLACK HOLE». «Доклады НАН РК», вып. 6 (декабрь):94-105. https://doi.org/10.32014/2021.2518-1483.116.