1. Starner T, Paradiso JA: Human generated power for mobile electronics. In Low-power electronics design. Edited by: Piguet C. Boca Raton: CRC Press; 2005.
2. Nokia 6301 data sheet[ http://www.nokia.com/A4140021 ]
3. Dell™ Inspiron™ 1525/1526 product information[ http://support.dell.com/support/edocs/systems/ins1525/en/index.htm ]
4. Ottobock C Leg[ http://www.ottobock.com/cps/rde/xbcr/ob_com_en/ifu_647h215_d_gb_f_e_c_leg.pdf ]
5. Ossur Proprio foot technical manual[ http://www.ossur.com/lisalib/getfile.aspx?itemid=12360 ]