Mikael Drugge Marcus Nilsson Urban Liljedahl Kåre Synnes Peter Parnes Methods for Interrupting a Wearable Computer User. 150-157 2004 conf/iswc/2004 ISWC http://csdl.computer.org/comp/proceedings/iswc/2004/2186/00/21860150abs.htm db/conf/iswc/iswc2004.html#DruggeNLSP04