BURTON, B. W.; DUHAUT, J. Progress with Air Photography from Helicopters for Hydrographic Work. The International Hydrographic Review, [S. l.], v. 52, n. 2, 2015. Disponível em: https://journals.lib.unb.ca/index.php/ihr/article/view/23748. Acesso em: 19 may. 2024.