TY - CONF T1 - CONTINUUM MODELS FOR DISCONTINUOUS MEDIA JO - FRACTURE PROCESSES IN CONCRETE, ROCK AND CERAMICS, VOLS 1 AND 2 PY - 1991/01/01 AU - DEBORST R AU - MUHLHAUS HB ED - VL - 13 SP - 601 EP - 618 Y2 - 2024/10/23 ER -