Testing For Unit Roots with Breaks: Evidence on the Great Crash and the Unit Root Hypothesis Reconsidered
Luis Catela Nunes, Paul Newbold, Chung-Ming Kuan
Oxford Bulletin of Economics and Statistics, vol. 59, 1997, p. 435-448.

Spurious Number of Breaks
Luis Catela Nunes, Paul Newbold, Chung-Ming Kuan
Economics Letters, vol. 50, 1996, p. 175-178.

Spurious Break
Luis Catela Nunes, Chung-Ming Kuan, Paul Newbold
Econometric Theory, vol. 11, 1995, p. 736-749.