@INPROCEEDINGS{haehnel02,
    author = {M. Hähnel and N. Hamacher and K.-F. Kraiss},
    title = {Usability Evaluation of Interactive Systems Using Trevis},
    booktitle = {Proceedings of the 6th International Scientific Conference on Work With Display Units WWDU 2002},
    year = {2002},
    editor = {H. Luczak, A. E. Cakir, G. Cakir},
    pages = {447-449},
    address = {Berchtesgaden},
    month = {May},
    publisher = {Ergonomisches Institut für Arbeits- und Sozialforschung, Forschungsgesellschaft mbH, Berlin},
}