In this paper, we use a unique database on switching between mobile handsets in a sample of about 5,000 subscribers using tariffs without commitment from a single mobile operator on monthly basis between March 2012 and December 2014. We estimate discrete choice model in which we account for...

There is growing evidence that the current agri-food system is not sustainable, because major environmental and ethical issues challenge the global development. Against this complex background it becomes clear, that sustainable food is a global issue, relevant for individual consumers as well as...