The issues of zero trade observations and the validity of the log linear transformation of the gravity equation have generated a number of debates in the literature with differing claims about the most suitable estimation technique. To produce unbiased and consistent estimates for policy making,...

This paper investigates the causes of rejections of African exports at the EU border as a barrier in accessing EU markets. Our results indicate that natural geographical hurdle, poor trade-related infrastructure, inefficient border procedure and a lack of technical personnel increase the...