TY  - DATA
AU  - Elsgolts, L. E.
TI  - Qualitative methods in mathematical analysis,
T2  - Translations of Mathematical Monographs, 
SN  - 9781470444327 (online)
PY  - 1964///
CY  - Providence
PB  - American Mathematical Society
KW  - Differential equations
KW  - Mathematical analysis
N1  - Bibliography: p. 231-250
UR  - https://doi.org/10.1090/mmono/012
ER  -