{"last_modified": {"type": "/type/datetime", "value": "2010-12-04T18:53:12.698647"}, "title": "Unterirdisches Bauen, Technik und Wirtschaftlichkeit", "created": {"type": "/type/datetime", "value": "2009-12-10T08:18:32.244378"}, "subjects": ["Congresses", "Tunneling", "Underground construction"], "latest_revision": 2, "key": "/works/OL5008744W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1086401A"}}], "type": {"key": "/type/work"}, "revision": 2}