@article {IOPORT.50293734,
    author       = {Grimsmo, Nils and Bj{\o}rklund, Truls Amundsen and Hetland, Magnus Lie},
    title        = {Fast optimal twig joins},
    year         = {2010},
    journal      = {PVLDB},
    volume       = {3},
    number       = {1},
    pages        = {894-905},
    identifier   = {50293734},
}