Marinov, Tchavdar, and Christo Christov. “Method of Variational Imbedding for Identification of Heat-Conduction Coefficient from Overposed Boundary Data”. Ann. Sofia Univ. Fac. Math. and Inf. 91 (December 12, 1999): 215–225. Accessed November 22, 2024. https://annual.uni-sofia.bg/index.php/fmi/article/view/280.