C. Frederick Peters
Carl Ludwig Siegel
Juan C. Muzzio
Su-Shu Huang
Bruno Stanek
Christopher Keil McCord
Florin Diacu
Ingrid Mann
NATO Advanced Study Institute on Stability of the Solar System and Its Minor Natural and Artificial Bodies (1984 Cortina d'Ampezzo, Italy)
Lehigh University. Department of Mathematics
Edward Belbruno
Joseph J. Smulsky
Victor Goyzo Szebehely
Jaume Llibre
Summer Institute in Dynamical Astronomy (1960 Yale University).
Bonnie A. Steves
Michel Hénon
J. M. Centrella