Vibrotactile masking and the persistence of tactual features. Craig, J. C. & Evans, P. M. Perception \& Psychophysics, 42(4):309-317, 1987.
bibtex   
@article{ Craig_Evans87,
  author = {Craig, J. C. and Evans, P. M.},
  title = {Vibrotactile masking and the persistence of tactual features},
  journal = {Perception \& Psychophysics},
  year = {1987},
  volume = {42},
  pages = {309-317},
  number = {4},
  en_number = {14.2:27}
}

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