J. L. Hernandez-rebollar, N. Kyriakopoulos, and R. W. Lindeman, A new instrumented approach for translating American Sign Language into sound and text, Sixth IEEE International Conference on Automatic Face and Gesture Recognition, 2004. Proceedings., 2004.
DOI : 10.1109/AFGR.2004.1301590

M. Yang, N. Ahuja, and M. Tabb, Extraction of 2D motion trajectories and its application to hand gesture recognition, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.24, 2002.

T. Kobayashi and S. Haruyama, Partly-hidden Markov model and its application to gesture recognition, 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, 1997.
DOI : 10.1109/ICASSP.1997.595443

S. Malassiotis, N. Aifanti, and M. G. Strintzis, A gesture recognition system using 3D data, Proceedings. First International Symposium on 3D Data Processing Visualization and Transmission, 2002.
DOI : 10.1109/TDPVT.2002.1024061

K. Nurzy?ska and A. Dusze?ko, An Overview of Polish Sign Language Learning Tool with Sign Recognizer Feedback, II International Conference of Interactive Mobile and Computer Aided Learning, 2007.

K. Nurzy?ska, Are the skin colour detectors stable in changing lighting conditions? (Comparison of skin colour detectors for signed language recognition). VIII International Workshop for Candidates for a Doctor's Degree, 2006.

K. Nurzy?ska and A. Dusze?ko, Interactive System for Polish Signed Language Learning, International Journal: Emerging Technologies in Learning, iJET, vol.1, issue.3, 2006.

J. Rosenberg, Session Initiation Protocol (SIP) Extensions for Presence, RFC 3856 Internet Draft, IETF Network Working Group, 2004.

T. Starner, J. Weaver, and A. Pentland, A wearable computer based American sign language recognizer, 1st International Symposium on Wearable Computers, 1997.
DOI : 10.1109/iswc.1997.629929
URL : http://c2000.cc.gatech.edu/classes/cs8113c_99_spring/readings/starner.pdf

T. Starner and A. Pentland, Real-time American Sign Language recognition from video using hidden Markov models, Proc. of International Symposium on Computer Vision, 1995.
DOI : 10.1007/978-94-015-8935-2_10
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.153.6485

B. Szczepankowski, Wyrównywanie szans osób nies?ysz?cych, 1999.

B. Szczepankowski, Lektorat J?zyka Migowego ? Kurs Wst?pny, Polski Zwi?zek G?uchych, Centralny Zwi?zek Spó?dzielni Inwalidów, 1986.

V. Ch and D. Metaxas, Parallel Hidden Marcov Models for American Sign Language Recognition, Proc. of the International Conference on Computer Vision, 1999.