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Testing for the Cointegrating Rank of a VAR Process with Structural Shifts.
Saikkonen, Pentti, (2000)
Comparison of tests for the cointegrating rank of a VAR process with a structural shift
Lutkepohl, Helmut, (2003)
Test Procedures for Unit Roots in Time Series with Level Shifts at Unknown Time
Lanne, Markku, (2003)