MCKENNA, D. The COETF: Keeping the Ball Rolling!. Canadian Journal of Optometry, [S. l.], v. 52, n. 1, p. 6, 1990. DOI: 10.65636/cjo.v52i1.7054. Disponível em: https://cjo-rco.ca/index.php/cjo/article/view/7054. Acesso em: 13 aug. 2026.