Values of dirichlet series at integers in the critical strip.- Analytic properties of euler products of automorphic representations.- Modular forms of weight 1/2.- Dimensions des espaces de formes modulaires.- Facteurs gamma et équations fonctionnelles.- Modular forms whose fourier coefficients involve zeta-functions of quadratic fields.- Correction to “The eichler-selberg trace formula on SL2(?)”.- A lifting of modular forms in one variable to hilbert modular forms in two variables.- Theta functions over Q and over Q(?q).- Séries thêta des formes quadratiques indéfinies.- Automorphic forms and Artin's conjecture.- Relations between automorphic forms produced by theta-functions.- The ring of hilbert modular forms for real quadratic fields of small discriminant.- On zeta-functions of rankin type associated with siegel modular forms.