Stefan Wirth Ekkehard Euler Ulrich Linsenmaier Clemens Rock Dorothea Kotsianos Roland Brandl Wolf Mutschler Klaus Jürgen Pfeifer C-arm based computed tomography - A comparative study. 429-435 2001 conf/cars/2001 CARS db/conf/cars/cars2001.html#WirthELRKBMP01