//-->
La decisión de exportar en Colombia : un modelo empírico de entrada con costos hundidos
Roberts, Mark J., (1997)
New Exporter Dynamics
Ruhl, Kim J., (2014)
New exporter dynamics
An empirical model of sunk costs and the decision to export
Roberts, Mark J., (1995)
Size rationalization and trade exposure in developing countries
Roberts, Mark J., (1991)