L. Ė Ėlʹsgolʹt͡s

• Differential equations and the calculus of variations
• Differential equations
• Introduction to the theory and application of differential equations with deviating arguments
• Introduction to the theory of differential equations with deviating arguments
• Qualitative methods in mathematical analysis
• Calculus of variations
• Different͡sialʹnye uravnenii͡a i variat͡sionnoe ischislenie
• Vvedenie v teorii͡u different͡sialʹnykh uravneniĭ s otkloni͡ai͡ushchimsi͡a argumentom