Diego Arroyuelo Francisco Claude Sebastian Maneth Veli Mäkinen Gonzalo Navarro Kim Nguyen Jouni Sirén Niko Välimäki Fast In-Memory XPath Search over Compressed Text and Tree Indexes http://arxiv.org/abs/0907.2089 2009 CoRR abs/0907.2089 db/journals/corr/corr0907.html#abs-0907-2089 informal publication