COTCHER, A. L. Earth Measurements Via Satellites. Annals of Geophysics, [S. l.], v. 16, n. 3, p. 381–384, 1963. DOI: 10.4401/ag-5236. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5236. Acesso em: 25 sep. 2022.