Valtonen, M.J. books & textbook
The Few Body Problem: Proceedings of the 96th Colloquium of the International Astronomical Union Held in Turku, Finland, June 14–19, 1987 (Astrophysics and Space Science Library)
Springer /2011-12-21 Paperback / 449 Pages
isbn-10: 9401078130 / isbn-13: 9789401078139
Worlds in Interaction: Small Bodies and Planets of the Solar System
Springer /2011-11-22 Paperback / 532 Pages
isbn-10: 9401065780 / isbn-13: 9789401065788
