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Springer has gone to a

**Page 216:**The second equation from the bottom is missing a 2. It should be ... [1 +__2__cos(2*π ω*)] ...

**Page 356, Property P6.6:**Remove the exogenous variables*Γ*from the observation equation, (6.105), and add them to the state equation, (6.104), as follows:**u**_{t}Υ**x**_{t+1}= ... +**u**_{t+1}*Γ*0 0 ... 0]' is*pm × r*. Thanks to Professor Doug Wiens, University of Alberta, for pointing out this blooper.