@article {IOPORT.05434253,
    author       = {Raptopoulou, Katerina and Vassilakopoulos, Michael and Manolopoulos, Yannis},
    title        = {On past-time indexing of moving objects.},
    year         = {2006},
    journal      = {Journal of Systems and Software},
    volume       = {79},
    number       = {8},
    issn         = {0164-1212},
    pages        = {1079-1091},
    publisher    = {Elsevier, New York, NY},
    doi          = {10.1016/j.jss.2005.10.020},
    identifier   = {05434253},
}