Three methods of coding nominal variables in regression analysis. Mathematical Machines and Systems, [S. l.], n. 4, p. 35–45, 2021. DOI: 10.34121/1028-9763-2021-4-35-45. Disponível em: https://www.j-mms.de/index.php/mms/article/view/2021-4-a3. Acesso em: 11 aug. 2026.