TY  - BOOK
AU  - Erugin, Nikolay P.
TI  - Linear systems of ordinary differential equations: with periodic and quasi-periodic coeffecients
T2  - Mathematics in science and engineering; v. 28
PY  - 1966///
CY  - New York
PB  - Academic Press
KW  - Differential equations
KW  - NASA Thesaurus
ER  -