 Usage:  ira(y,p,adj,variablenames)  
 
 Input:

  y                      (K x (p+T))-matrix, the multivariate time series (K univariate 
                         series with p+T observations) 
                         
  p                      (1 x 1)-matrix, order of the VAR-model 
                         
  adj                    scalar, 1=if mean adjusted model, 0=if not 
                         
  variablenames          (K x 1)-string, one name for each time series 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
