Mikhail Vasilʹevich Fedori͡uk

• Asymptotic analysis
• Partial differential equations
• Asimptoticheskie metody dli͡a lineĭnykh obyknovennykh different͡sialʹnykh uravneniĭ
• Asimptotika integraly i ri͡ady
• Metod perevala
• Obyknovennye different͡sialʹnye uravnenii͡a