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A counterexample to the ”generalized Ramanujan conjecture” for (quasi-) split groups. (English) Zbl 0423.22018
Automorphic forms, representations and L-functions, Proc. Symp. Pure Math. Am. Math. Soc., Corvallis/Oregon 1977, Proc. Symp. Pure Math. 33, 1, 315-322 (1979).

22E55 Representations of Lie and linear algebraic groups over global fields and adèle rings
11F27 Theta series; Weil representation; theta correspondences