@article {Rabus2003PERS, title = {{The shuttle radar topography mission {\textendash}- a new class of digital elevation models acquired by spaceborne radar}}, journal = {Photogrammetric Engineering and Remote Sensing}, volume = {57}, number = {4}, year = {2003}, pages = {241-262}, author = {Rabus, B. and Eineder, M. and Roth, A. and Bamler, R.} }