PANKOV, M. Projections of k-dimensional subsets of Rⁿ onto k-dimensional planes. Математическая физика, анализ, геометрия, Харків, Україна, v. 5, n. 1-2, p. 114–124, 1998. Disponível em: https://mag.ilt.kharkiv.ua/index.php/mag/article/view/m05-0114e. Acesso em: 23 лис. 2024.