. . "Е." . "A. E. Porozhnia︢kov" . "Александр Ефремович Порожняков" . "A. E. Porozhni︠a︡kov"@en . "А. Е. Порожняков" . "Porozhni︠a︡kov, A. E. (Aleksandr Efremovich)" . "А." . . "A. E. Porozhniakov" . "A. E. Porozhniakov" . "A."@en . "Porozhnia︢kov" . "Efremovich" . "A. E." . . "Aleksandr Efremovich Porozhni︠a︡kov" . "Александр Ефремович" . "A. E Porozhni︠a︡kov"@en-AU . . "Aleksandr Efremovich Porozhniakov"@es-ES . . "E."@en . "Aleksandr Efremovich" . . . "Порожняков" . "Porozhniakov" . "Aleksandr" . "Porozhni︠a︡kov"@en . "Aleksandr Efremovich Porozhni︠a︡kov" .