Original chapter 7, pp. 227–264, in Gravitation: an introduction to current research. Author reprint: arxiv.org/abs/gr-qc/0405109
Section 5.1, equations 5.1–5.2, reprint p. 16: asymptotic energy and momentum surface integrals. Section 5.2, reprint pp. 16–17: coordinate invariance and Lorentz four-vector interpretation. The paper's gravitational-unit normalization differs from the conventional factor 1/(16 pi) in geometrized units.
Institutional republication record verifies Richard Arnowitt, Stanley Deser and Charles W. Misner: authors.library.caltech.edu/records/9mht9-ktb09