%0 Journal Article %T Review of Survey activities 2006: Chalk depth structure maps, Central to Eastern North Sea, Denmark %A Vejb£żk %A Ole V. %A Bidstrup %A Torben %A Britze %A Peter %A Erlstr£żm %A Mikael %J Geological Survey of Denmark and Greenland Bulletin %D 2007 %I Geological Survey of Denmark and Greenland %K Geological Survey of Denmark and Greenland %K survey organisations %K current research %K Denmark %K Greenland %U http://www.geus.dk/publications/bull/nr13/nr13_p09-12.pdf