レスターの定理
org/stable/40378420
↑ Trott, Michael (1997), “Applying GroebnerBasis to three problems in geometry”, Mathematica in Education and Research 6 (1): 15–28, http://library.wolfram.com/infocenter/Articles/1754/
↑ Yiu, Paul (2010), “The Circles of Lester, Evans, Parry, and Their Generalizations”, Forum Geometricorum (10): 175-209, https://forumgeom.fau.edu/FG2010volume10/FG201020.pdf
↑ Thanh Oai, Dao (2014), “A Simple Proof of Gibert’s Generalization of the Lester Circle Theorem”, Forum Geometricorum (14): 123-125, https://forumgeom.fau.edu/FG2014volume14/FG201410.pdf