@article {IOPORT.05393232,
    author       = {Billinghurst, Mark and Kato, Hirokazu},
    title        = {Collaborative augmented reality.},
    year         = {2002},
    journal      = {Communications of the ACM},
    volume       = {45},
    number       = {7},
    issn         = {0001-0782},
    pages        = {64-70},
    publisher    = {Association for Computing Machinery, Inc. (ACM), New York, NY},
    doi          = {10.1145/514236.514265},
    identifier   = {05393232},
}