CELLO TECHNIQUE Gerhard Mantel
A very nice translation was published. Mantel's cello method that I bought at Disk Union when I was a student. The content is a very scientific analysis of how to play, and you can learn the mind and body. Musical things are separated, so you should always keep in mind the connection with them, but it is a good book for those who can easily achieve results by theoretically understanding movement. I don't think there are anyone who can analyze this far.