Lefschetz, Solomon, Ed.
Contributions to the theory of nonlinear oscillations, v.1-3,5 - Annals of mathematics, 20,29,36,45 .
B7:5,11 J0-1
534.01 LEF 534.01 LEF 534.01 LEF
Contributions to the theory of nonlinear oscillations, v.1-3,5 - Annals of mathematics, 20,29,36,45 .
B7:5,11 J0-1
534.01 LEF 534.01 LEF 534.01 LEF