Phys. Rev. D 36, 1041–1044 (1987)Positivity of total energy in general relativity
.ti 0 .ce 1 A simple argument for energy positivity is given. © 1987 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.36.1041
DOI:
10.1103/PhysRevD.36.1041
PACS:
04.20.Cv, 02.40.+m
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