Bernhard Mitschang Daniela Nicklas Matthias Großmann Thomas Schwarz Nicola Hönle Federating Location-Based Data Services. 17-35 2005 conf/birthday/2005wedekind Data Management in a Connected World http://dx.doi.org/10.1007/11499923_2 db/conf/birthday/wedekind2005.html#MitschangNGSH05