{"last_modified": {"type": "/type/datetime", "value": "2019-02-17T19:13:53.266178"}, "title": "Preconditioned conjugate gradient methods", "created": {"type": "/type/datetime", "value": "2019-02-17T19:13:53.266178"}, "subjects": ["Difference equations", "Numerical solutions", "Conjugate gradient methods", "Congresses", "Finite element methods"], "latest_revision": 1, "key": "/works/OL18880707W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL712349A"}}], "type": {"key": "/type/work"}, "revision": 1}