Andreeva NV, Serov NI, Tulupova LO. $Q$-conditional symmetry of a nonlinear two-dimensional heat-conduction equation. Ukr. Mat. Zhurn. [Internet]. 2000Jun.25 [cited 2024May14];52(6):846-9. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4481