TY  - BOOK
AU  - Samoilenko,A.M.
TI  - Numerical-analytic methods of investigating periodic solutions / 
U1  - 515.4 
PY  - 1979///
CY  - Moscow
PB  - MIR, 
KW  - Mathematics
KW  - Calculus
KW  - Nonlinear theories
KW  - Equations
ER  -