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IEEE Transactions on Industrial Informatics > 2012 > 8 > 2 > 291 - 301
IEEE Signal Processing Magazine > 2011 > 28 > 3 > 46 - 58
2008 Conference on Human System Interactions > 668 - 673
IEEE Transactions on Robotics > 2008 > 24 > 5 > 1094 - 1106