14: Quantum Groups, q-Orthogonal Polynomials and Basic Hypergeometric Functions -- 15: Semisimple Lie Groups and Related Homogeneous Spaces -- 16: Representations of Semisimple Lie Groups and Their Matrix Elements -- 17: Group Representations and Special Functions of a Matrix Argument -- 18: Representations in the Gel'fand-Tsetlin Basis and Special Functions -- 19: Modular Forms, Theta Functions and Representations of Affine Lie Algebras -- Bibliography Notes.