%0 Thesis %9 Dissertation %A Backers, Tobias %T Fracture toughness determination and micromechanics of rock under Mode I and Mode II loading %D 2005 %R 10.23689/fidgeo-514 %I GFZ%C Helmholtz-Zentrum %U http://hdl.handle.net/11858/00-1735-0000-0001-3292-0 %~ FID GEO-LEO e-docs