@article{ryall_identity-differentiating_2006, title = {Identity-differentiating widgets for multiuser interactive surfaces}, volume = {26}, url = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1683694}, number = {5}, urldate = {2016-05-05}, journal = {Computer Graphics and Applications, IEEE}, author = {Ryall, Kathy and Esenther, Alan and Forlines, Clifton and Shen, Chia and Shipman, Sam and Morris, Meredith Ringel and Everitt, Katherine and Vernier, Frederic D.}, year = {2006}, note = {00021}, pages = {56--64} }