Zinchenko TN, Murach AA. Douglis-Nirenberg elliptic systems in Hörmander spaces. Ukr. Mat. Zhurn. [Internet]. 2012 Nov. 25 [cited 2025 Dec. 5];64(11):1477-6. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2674