HIGH ACCURACY 3D DIGITISATION OF THE GOETHE ELEPHANT SKULL USING HAND-HELD 3D SCANNING SYSTEMS AND STRUCTURE FROM MOTION – A COMPARATIVE CASE STUDY - Kalinowski, P.; Füldner, K.; Mittmann, M.; Schierbaum, A.; Luhmann, T. (Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., 2022)