This paper examines the importance of geographic distance for the occurrence of knowledge flows between countries and how this importance has been changing over time. The main channels for knowledge flows are presented and an econometric analysis conducted with a focus on knowledge flows...

In this paper we investigate households' demand for school meals using a stated preferences approach. Data are collected through phone-structured interviews to 905 residents with children in the German-speaking region of Switzerland during 2007. A Poisson model with random effects is used to...

In this paper we reexamine the relationship between patents and R&D using empirical likelihood estimation. Based on the data of Hall, Griliches, and Hausman (1986) and the specification allowing for endogenous regressors, we found that the contemporaneous effect of R&D is significantly positive,...