@article {IOPORT.50293903,
    author       = {Papadopoulos, Stavros and Bakiras, Spiridon and Papadias, Dimitris},
    title        = {Nearest neighbor search with strong location privacy},
    year         = {2010},
    journal      = {PVLDB},
    volume       = {3},
    number       = {1},
    pages        = {619-629},
    identifier   = {50293903},
}