Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Jaejun Lee, Sang Hoon Hong, Yunmo Chung. Robust Tracking of Ultrasonic Pen for Handwriting Digitizer Applications. IEEE Trans. Consumer Electronics, 53(3):1098-1102, 2007. [doi]