TROPPMAIR, Helmut; 						GALINA, Marcia Helena.
 GEOSSISTEMAS (Geosystems).
<strong>Mercator</strong>, Fortaleza, v. 5, n. 10, p. p. 79 a 90, nov. 2008.
ISSN 1984-2201.
Available at: &lt;<a href="http://www.mercator.ufc.br/mercator/article/view/69" target="_new">http://www.mercator.ufc.br/mercator/article/view/69</a>&gt;. Date accessed: 25 apr. 2024.