This paper examines the prevalence and the determinants of informal entrepreneurial investment activity (including investors in firms of family and friends, and business angels), using a dataset of more than 175,000 individuals -- including some 4000 informal investors -- in 28 highly developed...

Most entrepreneurship theory depicts disequilibrium as the most common state for entrepreneurial activity and yet remarkably very little empirical research investigates the role of entry and exit in this type of external environment. Drawing on economics and organizational ecology we outline...

Martin J. C., Gutierrez J. and Roman C. (2004) Data Envelopment Analysis (DEA) index to measure the accessibility impacts of new infrastructure investments: the case of the high-speed train corridor Madrid-Barcelona-French border, Regional Studies38, 697-712. This paper applies Data Envelopment...

Consumers suffer from important information asymmetries with respect to safety quality, being the case that when a passenger boards a plane she does not know whether she is choosing a safe or risky airline. However, service quality is more directly perceived by passengers. In this paper, we...