Bonanos, Alceste Z. Eclipsing Binaries: Tools for Calibrating the Extragalactic Distance Scale. Binary Stars as Critical Tools and Tests in Contemporary Astrophysics, International Astronomical Union. Symposium no. 240, held 22-25 August, 2006 in Prague, Czech Republic, S240, #008. 2006 [2007-02-10]. (原始内容存档于2014-10-22).
Bonanos, Alceste Z. Eclipsing Binaries: Tools for Calibrating the Extragalactic Distance Scale. Binary Stars as Critical Tools and Tests in Contemporary Astrophysics, International Astronomical Union. Symposium no. 240, held 22-25 August, 2006 in Prague, Czech Republic, S240, #008. 2006 [2007-02-10]. (原始内容存档于2014-10-22).