Breedveld Paul, Scheltes Jules S, Blom Esther M, Verheij Johanna E I
Delft University of Technology, Faculty of Mechanical Engineering, Man-Machine Systems Group, The Netherlands.
IEEE Eng Med Biol Mag. 2005 Nov-Dec;24(6):40-7. doi: 10.1109/memb.2005.1549729.