Ivanov A. F. and Marushiyak P. (1992) “On oscilation and asymptotic behaviour of solutions of one system of differential-functional equations of neutral type”, Ukrains’kyi Matematychnyi Zhurnal, 44(8), pp. 1044-1049. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/8032 (Accessed: 27July2024).