@inproceedings{1322225,
 author = {Susumu Harada and T. Scott Saponas and James A. Landay},
 title = {Voicepen: augmenting pen input with simultaneous non-linguisitic vocalization},
 booktitle = {ICMI '07: Proceedings of the 9th international conference on Multimodal interfaces},
 year = {2007},
 isbn = {978-1-59593-817-6},
 pages = {178--185},
 location = {Nagoya, Aichi, Japan},
 doi = {http://doi.acm.org/10.1145/1322192.1322225},
 publisher = {ACM},
 address = {New York, NY, USA},
}