@article { HSF*:2006, title = {Visualization of Barrier Tree Sequences}, journal = {IEEE Transactions on Visualization and Computer Graphics}, volume = {12}, number = {5}, year = {2006}, pages = {781-788}, author = {Heine, C. and Gerik Scheuermann and Flamm, C. and Ivo L. Hofacker and Stadler, PeterF.} }