Approximation and Shape-Preserving Properties of $Q$-Stancu Operator. Analysis in Theory and Applications, [S. l.], v. 27, n. 3, p. 201–210, 2011. DOI: 10.1007/s10496-011-0201-9. Disponível em: https://global-sci.com/index.php/ata/article/view/7910. Acesso em: 6 dec. 2025.