Shtokalo, I. Z. (1961). Linear differential equations with variable coefficients: Criteria of stability and unstability of their solutions. Hindustan Publishing Corp.
Chicago-Zitierstil (17. Ausg.)Shtokalo, I. Z. Linear Differential Equations with Variable Coefficients: Criteria of Stability and Unstability of Their Solutions. Nueva Delhi: Hindustan Publishing Corp, 1961.
MLA-Zitierstil (9. Ausg.)Shtokalo, I. Z. Linear Differential Equations with Variable Coefficients: Criteria of Stability and Unstability of Their Solutions. Hindustan Publishing Corp, 1961.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.