@inproceedings(anderson-chi-2004-ephemeral-ink, title= {A Study of Digital Ink in Lecture Presentation}, author= {Richard J. Anderson and Ruth Anderson and Crystal Hoyer and Steven A. Wolfman}, url= {\url{http://www.cs.ubc.ca/~wolf/papers/chi-2004-inkstudy.pdf}}, booktitle= {Proceedings of CHI'04: the 2004 conference on Human factors in computing systems}, year= {2004}, isbn= {1-58113-702-8}, address= {Vienna, Austria}, order_no= {608043}, publisher= {ACM Press}, month= apr, )