In Section 3 (p. 165) first full sentence. When $Efε$ is reduced by 25% (not shown), there is no change (negligible) in the stiffness for the strain rate 0.05%/s and almost no change for the strain rate 0.05%/s.

It should have read: When $Efε$ is reduced by 25% (not shown), there is no change (negligible) in the stiffness for the strain rate 0.05%/s and almost no change for the strain rate 0.5%/s.