@inproceedings{KHL+01,
 author = {Keim, Daniel A. and Hao, Ming C. and Ladisch, Julian and Hsu, Meichun and Dayal, Umeshwar},
 booktitle = {Visualization 2001, Los Angeles},
 pages = {113},
 title = {Pixel Bar Charts: A New Technique for Visualizing Large Multi-Attribute Data Sets without Aggregation},
 year = {2001}
}