HubbleSite - NewsCenter - A Puzzle of Galactic Evolution is Solved — Massive Gas... [http://hubblesite.org/newscenter/archive/releases/1999/46/image/a/] - 2009-03-30 00:00:00 - public:GustavHolmberg delicious, vintergatskartan - 2 | id:275392 -
CiteULike: The Historian, the Picture, and the Archive [http://www.citeulike.org/user/ultrascichick/article/3815014] - 2009-03-04 00:00:00 - public:GustavHolmberg delicious, vintergatskartan, visualization - 3 | id:275454 -
