Timo Ojala Jani Korhonen Tiia Sutinen Pekka Parhi Lauri Aalto Mobile kärpät: a case study in wireless personal area networking. 149-156 2004 MUM http://doi.acm.org/10.1145/1052380.1052401 conf/mum/2004 db/conf/mum/mum2004.html#OjalaKSPA04