Our paper “k+-buffer: Fragment Synchronized k-buffer” was among the four best papers in I3D 2014 and has been invited for an extended version at the IEEE Transactions on Visualization and Graphics (TVCG) journal (see http://www.csee.umbc.edu/csee/research/vangogh/I3D2014/ and https://www.flickr.com/photos/mvives/13387936565/in/set-72157642866815403)