@article{BMJK09,
 author = {Bak, Peter and Mansmann, Florian and Janetzko, Halldor and Keim, Daniel A.},
 journal = {IEEE Transactions on Visualization and Computer Graphics (TVCG)},
 number = {6},
 pages = {913-920},
 title = {Spatiotemporal Analysis of Sensor Logs using Growth Ring Maps},
 volume = {15},
 year = {2009}
}