Title: N-body gravitational problem
Description: "This is based on the previously published e-books of the same author: N Bodies -- no problem : unrestricted two and three dimensional solutions (first edition February 2005; second expanded edition September 2005) and N-body Gravitational Problem: Unrestricted Solution (June 2007)"--
Subjects: Many-body problem, Celestial mechanics, Gravitation, Analytic Mechanics