@misc {IOPORT.70194631,
    author       = {Olsen, Dan R. and Halversen, Bradley W.},
    title        = {Interface usage measurements in a user interface management system},
    howpublished = {ACM Symposium on User Interface Software and Technology, 102-108 (1988).},
    year         = {1988},
    doi          = {10.1145/62402.62420},
    identifier   = {70194631},
}