//-->
Efficient tests of the seasonal unit root hypothesis
Rodrigues, Paulo M.M., (2007)
ASYMPTOTIC DISTRIBUTIONS FOR REGRESSION-BASED SEASONAL UNIT ROOT TEST STATISTICS IN A NEAR-INTEGRATED MODEL
Rodrigues, Paulo M.M., (2004)
ON TESTS FOR DOUBLE DIFFERENCING: METHODS OF DEMEANING AND DETRENDING AND THE ROLE OF INITIAL VALUES