Siân E. Lindley Richard Banks Richard H. R. Harper Anab Jain Tim Regan Abigail Sellen Alex S. Taylor 154-164 2009 67 Int. J. Hum.-Comput. Stud. 2 http://dx.doi.org/10.1016/j.ijhcs.2008.07.008 db/journals/ijmms/ijmms67.html#LindleyBHJRST09