Viktorovich Efimov V, Olegovich Chernigin K, Ivanovich Nikolaykin N, Vadimovich Vorob’ev V, Semenovich Kublanov M. Mathematical Modeling of Helicopter Dynamics with an External Sling Load. IJET [Internet]. 2018 Dec. 3 [cited 2024 May 3];7(4.38):1112-4. Available from: https://www.sciencepubco.com/index.php/ijet/article/view/27652