General Relativity and Gravitation
General Relativity and Gravitation > 2007 > 39 > 1 > 9-21
General Relativity and Gravitation > 2007 > 39 > 1 > 55-85
General Relativity and Gravitation > 2007 > 39 > 1 > 23-39
General Relativity and Gravitation > 2007 > 39 > 1 > 41-53
General Relativity and Gravitation > 2007 > 39 > 1 > 1-7