James D. Hamilton (Markov switching model) https://econweb.ucsd.edu/~jhamilton/
Hans-Martin Krolzig (MS-VAR model) https://ideas.repec.org/e/pkr17.html
Kim, Chang Jin (State Space-MS model, LIML MS model) https://ideas.repec.org/e/pki84.html
Yoon, Jae Ho (FIML MS model) https://sites.google.com/site/beowulfkorea/
Demian Pouzo, Zacharias Psaradakis, Martin Sola (MS model with CDTP) https://doi.org/10.3982/ECTA17249
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Markov switching model with CDTP
The Markov switching model is a parametric model