"The layering of polar firn investigations of the climatic impact on polar firn structure using high resolution density measurements and 3D-X-ray-microfocus-computer-tomography" . . . . . . . . . "The layering of polar firn : investigations of the climatic impact on polar firn structure using high resolution density measurements and 3D-X-ray-microfocus-computer-tomography" . . . . "Eisdecke." . . . . "Polargebiete." . .