//-->
The variation of certain speculative prices
Mandelbrot, Benoit, (1963)
Mandelbrot, Benoit, (1964)
On speculative prices and random walks: A denial
Weintraub, Robert E., (1963)
Nearly redundant parameters and measures of persistence in economic time series
Clark, Peter K., (1988)
Tax incentives and equipment investment
Clark, Peter K., (1993)
The cyclical component of US economic activity
Clark, Peter K., (1987)