Lee, Chung-Uk; Kim, Ho-Il; Park, Jang-Ho. The sdB+M Eclipsing System HW Virginis and its Circumbinary Planets. The Astronomical Journal. 2009, 137 (2):
Mater [5](页面存档备份,存于互联网档案馆) Pope John Paul II's Apostolic Letter Rosarium Virginis Mariae [6](页面存档备份,存于互联网档案馆) A Biography of St. Louis-Marie Grignion de