JOURNAL OF BIONIC ENGINEERING, Volume 6, Issue 1,2009, Pages 86-92, doi:10.1016/S1672-6529(08)60103-1
JOURNAL OF BIONIC ENGINEERING, Volume 6, Issue 1,2009, Pages 71-76, doi:10.1016/S1672-6529(08)60094-3
JOURNAL OF BIONIC ENGINEERING, Volume 6, Issue 1,2009, Pages 46-54, doi:10.1016/S1672-6529(08)60104-3
JOURNAL OF BIONIC ENGINEERING, Volume 6, Issue 1,2009, Pages 77-85, doi:10.1016/S1672-6529(08)60101-8