Tunç, Osman, and E. Korkmaz. 2022. “New Results on the Qualitative Analysis of Solutions of VIDEs by the Lyapunov–Razumikhin Technique”. Ukrains’kyi Matematychnyi Zhurnal 74 (11), 1544 -57. https://doi.org/10.37863/umzh.v74i11.6083.