Lukas Grittner Carsten Kleiner Daniel Kadenbach Implementing OMA DRM Using Web Services: An Approach to Integrate OMA DRM and Web Services on Mobile Units. 393-397 2007 conf/mdm/2007 MDM http://dx.doi.org/10.1109/MDM.2007.84 db/conf/mdm/mdm2007.html#GrittnerKK07