This is the publication you should cite if you want to make reference to ZVTM or ZGRViewer.
E. Pietriga, A Toolkit for Addressing HCI Issues in Visual Language Environments, IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC'05), pages 145-152, September 2005, Dallas, TX, USA
This is the corresponding BibTeX entry:
@article{10.1109/VLHCC.2005.11,
author = {Emmanuel Pietriga},
title = {A Toolkit for Addressing HCI Issues in Visual Language Environments},
journal = {IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC)},
volume = {00},
year = {2005},
isbn = {0-7695-2443-5},
pages = {145-152},
doi = {http://doi.ieeecomputersociety.org/10.1109/VLHCC.2005.11},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
If you want to specifically refer to Sigma Lenses or distortion lenses as implemented in ZVTM, use the followinh.
E. Pietriga, C. Appert, Sigma Lenses: Focus-Context Transitions Combining Space, Time and Translucence, CHI '08: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, pages 1343-1352, April 2008, Florence, Italy
This is the corresponding BibTeX entry:
@inproceedings{1357264,
author = {Emmanuel Pietriga and Caroline Appert},
title = {Sigma lenses: focus-context transitions combining space, time and translucence},
booktitle = {CHI '08: Proceeding of the twenty-sixth annual CHI conference on Human factors in computing systems},
year = {2008},
isbn = {978-1-60558-011-1},
pages = {1343--1352},
location = {Florence, Italy},
doi = {http://doi.acm.org/10.1145/1357054.1357264},
publisher = {ACM},
address = {New York, NY, USA},
}