TY  - BOOK
AU  - Bogoli͡ubov,N.N.
AU  - Mitropolʹskiĭ,I͡UA.
TI  - Asymptotic methods in the theory of non-linear oscillations
AV  - QA871 .B673 1961
U1  - 521/.32 
PY  - 1961///
CY  - Delhi, New York
PB  - Hindustan Pub. Corp., [stamped, Gordon and Breach Science Publishers]
KW  - Oscillations
KW  - Asymptotes
N1  - [Russian monographs and texts on advanced mathematics and physics. v. 10]; Includes bibliography
ER  -