Roberto Lopes Thiers, Paulo. 2012. “GEODESIC LOCATION OF THE LINE OF MEDIUM HIGH TIDE WITHRELATIONSHIP TO THE YEAR OF 1831, IN THE BEACH OF FUTURO FORTALEZA-CE, BRAZIL”. Goiano Bulletin of Geography 32 (1): 31-44. https://doi.org/10.5216/bgg.v32i1.18954.