Moremedi GM, Stavroulakis I, Zhunussova ZK. Necessary and Sufficient Conditions for Oscillations of Functional Differential Equations. JMMCS [Internet]. 2018 Dec. 21 [cited 2024 Jul. 3];99(3):12-23. Available from: https://bm.kaznu.kz/index.php/kaznu/article/view/528