Method of variational imbedding for identification of heat-conduction coefficient from overposed boundary data. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, [S. l.], v. 91, p. 215–225, 1999. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/280. Acesso em: 11 jan. 2026.