Links:
[1] http://www.aavso.org/sites/default/files/education/olympiad/2011/Astronomy Event 2011.pdf
[2] http://www.aavso.org/sites/default/files/education/olympiad/2011/Astronomy 2011 Answer Key.pdf
[3] http://www.chandra.harvard.edu/edu/olympiad.html
[4] http://www.aavso.org/education
[5] http://www.aavso.org/category/tags/education
[6] http://www.aavso.org/category/tags/science-olympiad
