Dear Colleagues
I'm sorry I had to delete the uploaded files as I remembered and realized that my action is considered illegal as these books are protected by PATENT
I know that we do not intend to remarket the books, but to review them for the benefit of our students next year.
I decided to co-operate with others in a different way. For example, by presenting materials based on the set books but through my own creation
I beg your Pardon