Unzipping 'TRFORT.ZIP' yields the following files:

 1.  readme:		This file.

 2.  gnpdefl.asc:	An ascii file containing the (natural) logarithm 
			of the extended Nelson & Plosser GNP price deflator
			data.

 3.  nomgnp.asc:	An ascii file containing the (natural) logarithm
			of the extended Nelson & Plosser nominal GNP
			data.

 4.  trt1.cnl:		An ascii control file for running the TRT1.FOR
			program. See: (1) notes at the top of TRT1.FOR;
       			and (2) TRFOR01.PAP/TRFOR01.PS (see below).

 5.  trt2.cnl:		An ascii control file for running the TRT2.FOR
			program. See: (1) notes at the top of TRT2.FOR;
 			and (2) TRFOR01.PAP/TRFOR01.PS (see below).

 6.  trt1.exe:		An executable version (to run on an IBM-compatible
			pc) of TRT1.FOR.

 7.  trt2.exe:		An executable version (to run on an IBM-compatible
			pc) of TRT2.FOR.

 8.  trt1.for:          A FORTRAN program for running the first stage
			of the Ramsey and Rothman (1996) TR Test.

 9.  trt2.for:		A FORTRAN program for running the second-stage
			of the Ramsey and Rothman (1996) TR Test.

10.  t1nomgnp.out:	An ascii output file generated by TRT1.EXE, after
			reading contents of TRT1.CNL.

11.  t2gnpdef.out:	An ascii output file generated by TRT2.EXE, after
			reading contents of TRT2.CNL.


References:
Ramsey, J.B. and Rothman, P. (1996).
	Time irreversibility and business cycle asymmetry.
	Journal of Money, Credit and Banking, 28(1), 1--21.
	DOI: 10.2307/2077963.
Rothman, P. (1992).
	The comparative power of the TR test against simple
	threshold models.
	Journal of Applied Econometrics, 7(S1), 187--195.
	DOI: 10.1002/jae.3950070513.
Rothman, P. (1996).
	FORTRAN programs for running the TR test: A guide and examples.
	Studies in Nonlinear Dynamics & Econometrics, 1(4).
	DOI: 10.2202/1558-3708.1023.


	
