==External links==* F. M. Jackson and* F. M. Jackson and* Bernard Gibert Circumcubic K026* Bernard Gibert Circumcubic K044* Clark Kimberling, "Encyclopedia of triangle centers".
* F. M. Jackson and* F. M. Jackson and* Bernard Gibert Circumcubic K026* Bernard Gibert Circumcubic K044* Clark Kimberling, "Encyclopedia of triangle centers".