The forest is an ecosystem that can produce environmental services from which individuals benefit. In recent decades, the interest in these services has significantly increased and changed to meet new needs. The demand for wood has gradually become integrated into the demand for new products and...

This paper deals with the relationship between international travelling and trade. For this purpose we focus on a particular case study: the connection between the Spanish wine exports to Germany and the German travellers to Spain. Unlike previous studies we use a methodology based on fractional...