(2006), Simulation‐based Finite Sample Linearity Test against Smooth Transition Models, OXFORD BULLETIN OF ECONOMICS AND STATISTICS, 68, (s1), (pp. 797-812)
(2002), Returns and the interest rate: a non-linear relationship in the Bogota' stock market, Applied Financial Economics, 12, (11), (pp. 835-842)
(2001), Some evidence of smooth transition nonlinearity in Colombian inflation, 33, (2), (pp. 155-162)