Fardigola L, Khalina K. Approximate Controllability Problems for the Heat Equation in a Half-Plane Controlled by the Dirichlet Boundary Condition with a Bounded Control. Журн. мат. фіз. анал. геом. [інтернет]. 20, Лютий 2026 [цит. за 21, Лютий 2026];22(1):34–65. доступний у: https://jmag.ilt.kharkiv.ua/index.php/jmag/article/view/1125