Wan Noorshahida Mohd Isa Junaidi Abdullah Chikkannan Eswaran Gait classification of twins and non-twins siblings. 47-51 2013 CIBIM https://doi.org/10.1109/CIBIM.2013.6607913 conf/cibim/2013 db/conf/cibim/cibim2013.html#IsaAE13