Klevchuk, I. I. “Bifurcation of the State of Equilibrium in the System of Nonlinear Parabolic Equations With Transformed Argument”. Ukrains’kyi Matematychnyi Zhurnal 51, no. 10 (October 25, 1999): 1342–1351. Accessed May 19, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4733.