TY  - BOOK
AU  - Shtokalo, I. Z.
AU  - 
TI  - Linear differential equations with variable coefficients; criteria of stability and unstability of their solutions
T2  - International monographs on Advanced Mathematics and Physics
U1  - 515.35 
PY  - 1961///
CY  - Delhi
PB  - Hindustan
N1  - "Tr. from the Russian"
ER  -