@inproceedings{GBR07,
 author = {Gerken, Jens and Bak, Peter and Reiterer, Harald},
 booktitle = {Metrics for the Evaluation of Visual Analytics (an InfoVIS 2007 Workshop)},
 month = {oct},
 note = {Position Paper presented @ InfoVis'07 Workshop},
 title = {Longitudinal evaluation methods in human-computer studies and visual analytics},
 year = {2007}
}