Leo Graetz(英语:Leo Graetz). The 格里望遠鏡 is named after James Gregory(英语:James Gregory (mathematician)), who published it in 1663, but was already known to
(原始内容存档于26 October 2012). Martin, Douglas. Samuel Karlin, Versatile Mathematician, Dies at 83. The New York Times. 21 February 2008 [23 June 2018]. (原始内容存档于2020-11-05)
Archimedes of Syracuse (ca. 287 212 BC), the most original and profound mathematician of antiquity. Encyclopædia Britannica Online. Ptolemy. Encyclopædia