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. 1 (фев. 2019), 55–61.