Degtyarev, S. P. “On the Instantaneous Shrinking of the Support of a Solution to the Cauchy Problem for an Anisotropic Parabolic Equation”. Ukrains’kyi Matematychnyi Zhurnal 61, no. 5 (May 25, 2009): 625–640. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/3046.