Ivasyshen SD, Kondur OS. On the analyticity of solutions of $\overrightarrow{2b}$-parabolic systems. Ukr. Mat. Zhurn. [Internet]. 2006Feb.25 [cited 2024Apr.26];58(2):160-7. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3444