International Symposium on Nonlinear differential equations and nonlinear mechanics
edited by Joseph P. LaSalle and Solomon Lefschetz.
New York : Academic Press, 1963.
xiv, 505 págs. ; 24 cm.
"The symposium [...] was held [...] at the U.S. Air Force Academy, and was sponsored by the Air Force Office of Scientific Research and RIAS."
Reseña: MathSciNet, 26 #3952