Galeotti, Marzio; Manera, Matteo; Lanza, Alessandro - 2013
, in case of presence of unit roots, on the cointegration property that must be present for the EKC to be a well … basis of panel integration and cointegration tests for sulfur, Stern (2002, 2003) and Perman and Stern (1999, 2003) have … conclusions can be arrived at when carrying out tests of system fractional integration and cointegration. As an example we use the …