KOLTUN, Len. Past President’s Travels | Les déplacements du président sortant. Canadian Journal of Optometry, [S. l.], v. 71, n. 4, p. 6, 2009. DOI: 10.15353/cjo.71.647. Disponível em: https://openjournals.uwaterloo.ca/index.php/cjo/article/view/647. Acesso em: 9 may. 2024.