2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35900Using an energy-momentum tensor for spinning particles due to Dixon and Bailey-Israel, we develop the post-Newtonian approximation for N spinning particles in a self-contained manner. The equations of motion are derived directly from this energy-momentum tensor. Following the formalism of Epstein- Wagoner, we also obtain the waveform and the luminosity of the gravitational wave generated by these particles.18 pages, no figures, RevtexGeneral Relativity and Quantum Cosmologytext