ADONIA ODESHOO, D.; NATHEER ISMAEL, M. surface orientation analysis of spatial data with the application. Journal of Education and Science (JES), [S. l.], v. 22, n. 2, p. 339–353, 2009. DOI: 10.33899/edusj.2009.57691. Disponível em: https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23493. Acesso em: 6 aug. 2025.