@article {DOI10.1109/TVCG.2013.188, title = {Semantics of Directly Manipulating Spatializations}, journal = {IEEE Transactions on Visualization and Computer Graphics}, volume = {19}, year = {2013}, month = {12/2013}, pages = {2052 - 2059}, issn = {1077-2626}, doi = {10.1109/TVCG.2013.188}, author = {Hu, Xinran and Lauren Bradel and Maiti, Dipayan and House, Leanna and North, Chris and Leman, Scotland} }