Antoniouk, A. V., and A. V. Antoniouk. “Nonexplosion and Solvability of Nonlinear Diffusion Equations on Noncompact Manifolds”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 59, no. 11, Nov. 2007, pp. 1454–1472, https://umj.imath.kiev.ua/index.php/umj/article/view/3404.