:

  •  
                                                          

    (Paulus Diaconus) ( . 720-799)

    (Paulus Diaconus) ( . 720-799)

    " " ( 744). .

    . . .

    (Alfven) ( . 1908)
    ( . 1941)
    (razauskas) ( . 1932) 1993. 1956 - . 1965
    :