A Little Bit of Evidence on the Natural Rate Hypothesis From the U.S
Published in: Journal of Monetary Economics (Vol. 4, No. 2, April 1978, pp. 315-319), https://doi.org/10.1016/0304-3932(78)90009-0.
Published in: The Legacy of Robert Lucas, Jr., Kevin D. Hoover, Ed., (Vol. 2, 1999, pp. 424-428)