We consider the efficient, scalable management of XML documents in structured peer-to-peer networks based on distributed hash table (DHT) indices. We present an approach for exploiting materialized views deployed in the DHT network independently by the peers, to answer an interesting dialect of tree pattern queries. We provide algorithms for the distributed maintenance of the views and for view based query rewriting. We discuss view definition indexing strategies based on the DHT and compare their performance through a set of experiments on a completely deployed platform.