http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Numerical solutions of the N-body problem
Περιλαμβάνει βιβλιογραφικές παραπομπές και ευρετήριο.
Mathematics and its applications (D. Reidel Publishing Company)