Notes, Comments and Preliminary results May 04 2005 Boriss Siliverstovs   The Bi-parameter Smooth Transition Autoregressive model   Abstract  Contact Information  Citation  Full Text  -  Note   Nov 26 2003 Boriss Siliverstovs   Unusual behaviour of Dickey-Fuller tests in the presence of trend misspecification: comment   Abstract  Contact Information  Citation  Full Text  -  Comment