V. I. Elkin

• Reduction of nonlinear control systems
• Redukt͡s︡ii͡a︡ nelineĭnykh upravli͡a︡emykh sistem
• Metody algebry i geometrii v teorii upravlenii͡a︡, vektornye poli͡a︡ i gruppy diffeomorfizmov
• Metody algebry i geometrii v teorii upravlenii︠a︡
• Metody algebry i geometrii v teorii upravleni͡ia. Upravl͡iaemye dinamicheskie sistemy
• Reduction of nonlinear control systems
• Redukt︠s︡ii︠a︡ nelineĭnykh upravli︠a︡emykh sistem