LITOVCHENKO, V.A. Parabolic by Shilov systems with variable coefficients. Carpathian Mathematical Publications, [S. l.], v. 9, n. 2, p. 145–153, 2018. DOI: 10.15330/cmp.9.2.145-153. Disponível em: https://scijournals.pnu.edu.ua/index.php/cmp/article/view/1458. Acesso em: 6 may. 2024.