ATRACTOR

[1] POLYA, George - How to Solve It: a new aspect of mathematical method. With a new foreword by John Conway. United States of America: Expanded Princeton Science Library Edition, 2004.

[2] ALEXANDER, James - Loxodromes: a rhumb way to go. Mathematics Magazine, Vol. 77, no. 5, December 2004, pp. 349 - 356.

[3] EUCLIDES - Elementos de Euclides. Dos seis primeiros livros, do undecimo e duodecimo da versão latina de Frederico Commandino. Coimbra: Imprensa da Universidade, 1855. Disponível aqui.

[4] KLINE, Morris - Mathematical Thought From Ancient to Modern Times, Volume 3. Oxford University Press, 1972.

[5] ROSENFELD, B. A. - A History of Non-Euclidean Geometry. New York: Springer-Verlag New York Inc., 1988. Translation of Istoriya Neevklidovoi Geometrii. Moscow: Nauka, 1976.

[6] COXETER, H. S. M. - Non-Euclidean Geometry. Cambridge University Press, 1998.

[7] BLUMENTHAL, Leonard M. - A Modern View of Geometry. Courier Dover Publications, 1980.