Roberto Lopes Thiers, P. (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. Goiânia, 32(1), pp. 31–44. doi: 10.5216/bgg.v32i1.18954.