@inproceedings{alexander2014,
  author	= {Jason Alexander and John Hardy and Stephen Wattam},
  title		= {Characterising the Physicality of Everyday Buttons},
  booktitle	= {Interactive Tabletops and Surfaces},
  year		= {2014},
  series	= {ITS '14},
  pages		= {205--208},
  publisher	= {ACM},
}