DZIUBAN, Charles D.; SHIRKEY, Edwin C. Principal Components, Random Numbers, and Transformations. Florida Journal of Educational Research, [S. l.], v. 19, n. 1, p. 1–3, 1977. DOI: 10.62798/NPYI5948. Disponível em: https://journals.flvc.org/fjer/article/view/133786. Acesso em: 13 feb. 2026.