VASYLYSHYN, T.V. Continuous block-symmetric polynomials of degree at most two on the space $(L_\infty)^2$. Carpathian Mathematical Publications, [S. l.], v. 8, n. 1, p. 38–43, 2016. DOI: 10.15330/cmp.8.1.38-43. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/1412. Acesso em: 18 may. 2024.