%0 Journal Article %T An Investigation on Stiffness Analysis of a 3-PSP Spatial Parallel Mechanism with Flexible Moving Platform Using Invariant Form %A Rezaei, Amir %A Akbarzadeh Tootoonchi, Alireza %A Akbarzadeh Totonchi, Mohammad Reza %J Mechanism and Machine Theory %@ 0094-114X %D 2012