Nikolaĭ Evgenʹevich Ershov

• Akusticheskoe pole v gorizontalʹno-odnorodnoĭ sloistoĭ srede s trekhmernym uprugim vkli͡ucheniem
• Chislennoe reshenie trekhmernoĭ stat͡sionarnoĭ zadachi difrakt͡sii akusticheskikh voln na uprugom vkli͡uchenii