Malkov Ewgenii, Bekov Askar, Momynov Serzhan, Beckmuhamedov Ilias., Kurmangaliev Duman, Mukametzhan Aidana, и Orynqul Iltefat. 2019. «INVESTIGATION OF TWO FIXED CENTERS PROBLEM AND HENON-HEILES POTENTIAL BASED ON THE POINCARE SECTION». Известия НАН РК. Серия физико-математическая, вып. 1 (февраль):55-61. https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1161.