[Lecture Notes in Economics and Mathematical Systems] Markov-Switching Vector Autoregressions Volume 454 || In the last decade time series econometrics has changed dramatically. One increasingly prominent field has become the treatment of regime shifts and non-linear mod- elling strategies. While the importance ofregime shifts, particularly in macroeconometric systems, seems to be generally accepted, there is no established theory suggesting a unique approach for specifying econometric models that embed changes in regime.