Rudolf Kolish: Tempo and character in Beethoven's music

In my diploma work I would like to clarify discussed question,which relate with metronom sings of the Beethoven´s works. My purpose is to find theyr relation to the character of his music. I gather from scientific work of Rudolf Kolisch. The opinion of Rudolf Kolisch is to keep the original Beethoven´s metronom sings. He supports his work with strong scientific arguments, which I describe in my diploma work