Shtokalo, I. Z. (1961). Linear differential equations with variable coefficients: Criteria of stability and unstability of their solutions. Hindustan Publishing Corp.
Citação norma ChicagoShtokalo, I. Z. Linear Differential Equations with Variable Coefficients: Criteria of Stability and Unstability of Their Solutions. Nueva Delhi: Hindustan Publishing Corp, 1961.
Citação norma MLAShtokalo, I. Z. Linear Differential Equations with Variable Coefficients: Criteria of Stability and Unstability of Their Solutions. Hindustan Publishing Corp, 1961.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.