| Carneiro et al. [49] | 448 large Brazilian exporters of manufactured products. | Psychic distance; Business distance; Barriers in the host country; Status of the exporting activity; Systematization of export planning. | Export performance exhibited a multidimensional structure and the model explained 76.6% and 40.1% of the observed variance of past export revenues and of past export profitability, respectively. |
| Mohammadzadeh and Sojoodi [50] | 12301 Iranian industrial firms: 2007 | R & D expenditures; Ownership of firm; Capital/Labour ratio; Human capital (BA or BS labours or higher); Wage. | Human capital and ownership have no effect on export. Greater capital/labour ratio leads to more export. |