GuliyevA. F., & IsmayilovaS. H. (2014). Mixed Boundary-Value Problem for Linear Second-Order Nondivergent Parabolic Equations with Discontinuous Coefficients. Ukrains’kyi Matematychnyi Zhurnal, 66(11), 1443-1462. Retrieved from http://umj.imath.kiev.ua/index.php/umj/article/view/2237