Paul Holleis Albrecht Schmidt Susanna Paasovaara Arto Puikkonen Jonna Häkkilä Evaluating capacitive touch input on clothes. 81-90 2008 Mobile HCI http://doi.acm.org/10.1145/1409240.1409250 conf/mhci/2008 db/conf/mhci/mhci2008.html#HolleisSPPH08