1. T.M. Apostol, Modular Functions and Dirichlet Series in Number Theory. Second ed., Grad. Texts in Math., 41, Springer-Verlag, 1990.
2. Arthur J.: Unipotent automorphic representations: conjectures. Orbites unipotentes et représentations. II, Astérisque 171-172, 13–71 (1989)
3. A.A. Beĭlinson, Higher regulators and values of L-functions, In: Current Problems in Mathematics, 24, Itogi Nauki i Tekhniki, Akad. Nauk SSSR, Vsesoyuz. Inst. Nauchn. i Tekhn. Inform., Moscow, 1984, pp. 181–238.
4. N. Bergeron, Propriétés de Lefschetz automorphes pour les groupes unitaires et orthogonaux, Mém. Soc. Math. Fr. (N.S.), 106, Soc. Math. France, 2006.
5. Bloch S.: Algebraic cycles and higher K-theory. Adv. in Math. 61, 267–304 (1986)