N. L. Makhatova, A. M. Bakirbekova, и V. Sharff. 2019. «TO THE ISSUE OF INNOVATIVE DEVELOPMENT OF RAILWAY TRANSPORT IN KAZAKHSTAN». «Вестник НАН РК», вып. 3 (июнь):180-85. https://journals.nauka-nanrk.kz/bulletin-science/article/view/1476.