AYRES, Frank (1954). [b]Schaum's outline of theory and problems of plane and spherical trigonometry[/b]. [color=#999999]New York : McGraw-Hill.[/color][br][br]BRUMMELEN, Glen Van (2012). [b]Heavenly Mathematics[/b]: [i]The Forgotten Art of Spherical Trigonometry[/i]. [color=#999999]Princeton University Press.[/color][br][br]JOHNSON, Rob. [b]Spherical Trigonometry[/b]. [color=#999999]West Hills Institute of Mathematics.[/color][br][br]TODHUNTER, Isaac (1886). [b]Spherical Trigonometry[/b]: [i]For the Use of Colleges and Schools[/i] (5[sup]e[/sup] éd.). [color=#999999]London : Macmillan and Co.[/color] [url=http://www.gutenberg.org/ebooks/19770]http://www.gutenberg.org/ebooks/19770[br][br][/url]

Les coordonnées des points délimitant les contours des continents dans les différentes appliquettes proviennent de [url=https://ggbm.at/MggKnPd7][b]La Course Autour Du Monde en 3D[/b][/url] de [url=https://www.geogebra.org/philippe+ligarius][i]Philippe Ligarius[/i][/url].