Romanenko IB, Skrypnik IV. A priori estimates of solutions of linear parabolic problems with coefficients from Sobolev spaces. Ukr. Mat. Zhurn. [Internet]. 1999Nov.25 [cited 2024Nov.25];51(11):1534–1548. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4755