Loi, Nguyen Van. “Guiding Functions and Global Bifurcation of Periodic Solutions of Functional Differential Inclusions With Infinite Delay”. Topological Methods in Nonlinear Analysis 40, no. 2 (April 23, 2012): 359–372. Accessed April 25, 2025. https://apcz.umk.pl/TMNA/article/view/TMNA.2012.036.