  The Ramanujan conjecture for modular forms of holomorphic type was proved by
Deligne almost half a century ago: the proof, based on his earlier proof of
Weil's conjectures, was an achievement of algebraic geometry. Quite recently,
we proved the conjecture in the case of Maass forms of the full unimodular
group: we show here that the proof given in this case works in the holomorphic
case as well.
