Korkuna, O. E. “Cauchy Problem for a Semilinear Éidel’man Parabolic Equation”. Ukrains’kyi Matematychnyi Zhurnal 60, no. 5 (May 25, 2008): 586–602. Accessed May 5, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3178.