Add punctuation to the following sentence: Although he was greatly influenced by Klein and had already begun to undertake advanced work with him he went for academic year 187778 to continue his studies at the University of Berlin where he attended classes by Kummer Weierstrass and Kronecker In particular he attended the one semester course by Weierstrass Introduction to the theory of analytic functions and the notes taken by Hurwitz at this time are reproduced as the book
Although he was greatly influenced by Klein and had already begun to undertake advanced work with him, he went for academic year 1877-78 to continue his studies at the University of Berlin where he attended classes by Kummer , Weierstrass and Kronecker . In particular he attended the one semester course by Weierstrass Introduction to the theory of analytic functions and the notes taken by Hurwitz at this time are reproduced as the book .