Christian Heipke Heinrich Ebner Ralph Schmidt Michael Spiegel Rüdiger Brand Albert Baumgartner Gerhard Neukum Camera Orientation of Mars Express Using DTM Information. 544-552 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3175&spage=544 2004 conf/dagm/2004 DAGM-Symposium db/conf/dagm/dagm2004.html#HeipkeESSBBN04