James Keng Soon Teh Adrian David Cheok Roshan Lalintha Peiris Yongsoon Choi Vuong Thuong Sha Lai Huggy Pajama: a mobile parent and child hugging communication system. 250-257 2008 IDC http://doi.acm.org/10.1145/1463689.1463763 conf/acmidc/2008 db/conf/acmidc/idc2008.html#TehCPCTL08