V. A. I͡Akubovich

• Linear differential equations with periodic coefficients
• Stability of stationary sets in control systems with discontinuous nonlinearities
• Lineĭnye different͡sialʹnye uravnenii͡a s periodicheskimi koėffit͡sientami i ikh prilozhenii͡a
• Parametricheskiĭ rezonans v lineĭnykh sistemakh