KlevchukI. I. (1995) “Bifurcation of an equilibrium state of a singularly perturbed system with lag”, Ukrains’kyi Matematychnyi Zhurnal, 47(8), pp. 1022–1028. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5499 (Accessed: 24November2024).