Contributions to the theory of nonlinear oscillations, Vol.1
Lefschetz, S,
Contributions to the theory of nonlinear oscillations, Vol.1 S Lefschetz - - Princeton University Press, New Jersey 1950 - - Annals of Mathematics Studies, Vol.020 .
Annals of Mathematics Studies
R AMS.020
Contributions to the theory of nonlinear oscillations, Vol.1 S Lefschetz - - Princeton University Press, New Jersey 1950 - - Annals of Mathematics Studies, Vol.020 .
Annals of Mathematics Studies
R AMS.020