Harre, Ingo. « A Standardised Algorithm for the Determination of Position Errors by the Example of GPS With and Without ’Selective Availability’ ». The International Hydrographic Review 2, no. 1 (janvier 1, 2001). Consulté le juillet 18, 2024. https://journals.lib.unb.ca/index.php/ihr/article/view/20524.