Sobchuk VV, Zelenska IO. STUDY OF ASYMPTOTIC SOLUTIONS OF SYSTEMS OF SINGULARLY PERTURBED DIFFERENTIAL EQUATIONS WITH TURNING POINTS. JNAM [Internet]. 2023 Feb. 1 [cited 2026 Oct. 6];1(2):151-7. Available from: https://jnam.knu.ua/index.php/jnam/article/view/150