Papers Covered Cluster and Calendar based Visualization of Time Series Data. Jarke J. van Wijk and Edward R. van Selow, pp 4-9 Proc. InfoVis 99. http://www.win.tue.nl/~vanwijk/clv.pdf Using Multilevel Call Matrices in Large Software Projects. Frank van Ham, Proc. InfoVis 2003, pp 227-232 http://www.win.tue.nl/~fvham/DL/callmatrix.pdf Constellation: Linguistic Semantic Networks Tamara Munzner, Interactive Visualization of Large Graphs and Networks (PhD thesis) Chapter 5, Stanford University, 2000, pp 87-122 http://graphics.stanford.edu/papers/munzner_thesis 3