%0 Journal Article %J IEEE Transactions on Haptics %D 2009 %T Passive and Active Discrimination of Natural Frequency of Virtual Dynamic System %A Ali Israr %A Yanfang Li %A Volkan Patoglu %A O'Malley, M.K. %B IEEE Transactions on Haptics %V 2 %P 40-51 %8 02/2009 %R 10.1109/TOH.2008.21 %> https://mahilab.rice.edu/sites/default/files/publications/102-Israr-Li-Patoglu-O%27Malley_IEEEToH_2%281%29_2009FINAL.pdf