International Conference on the Few Body Problem < 1980, Eugene, Ore.>. (1981). The few body problem: Proceedings of the Ninth International Conference on the Few Body Problem, Eugene, Oregon, USA, 17-23 August 1980 ; plenary session papers. North Holland.
Chicago-Zitierstil (17. Ausg.)International Conference on the Few Body Problem < 1980, Eugene, Ore.>. The Few Body Problem: Proceedings of the Ninth International Conference on the Few Body Problem, Eugene, Oregon, USA, 17-23 August 1980 ; Plenary Session Papers. Amsterdam: North Holland, 1981.
MLA-Zitierstil (9. Ausg.)International Conference on the Few Body Problem < 1980, Eugene, Ore.>. The Few Body Problem: Proceedings of the Ninth International Conference on the Few Body Problem, Eugene, Oregon, USA, 17-23 August 1980 ; Plenary Session Papers. North Holland, 1981.