In this paper we examine temporal properties of eleven natural resource real price series from 1870-1990 by employing a Lagrangian Multiplier unit root test that allows for two endogenously determined structural breaks with and without a quadratic trend. Contrary to previous research, we find...

In this paper we examine temporal properties of eleven natural resource real price series from 1870-1990 by employing a Lagrangian Multiplier unit root test that allows for two endogenously determined structural breaks with and without a quadratic trend. Contrary to previous research, we find...

Many researchers have only focused on a single way of collecting data when other methods are available. This study proposes a template for researchers who intend to use the qualitative means in extracting data for analysis. The template shows the Olonite Observation Extract Template (OOEXT)