幾何中心
↑ Protter & Morrey, Jr. 1970, p. 520.
↑ Protter & Morrey, Jr. 1970, p. 526.
↑ Protter & Morrey, Jr. 1970, pp. 526–528.
↑ Larson 1998, pp. 458–460.
↑ Altshiller-Court 1925, p. 101.
↑ Kay 1969, pp. 18, 189, 225–226.
↑ Bottomley, Henry. “Medians and Area Bisectors of a Triangle”. 2013年9月27日閲覧。
1 2 Altshiller-Court 1925, pp. 70–71.