This paper aims to present an operational framework for sustainable agricultural development at the local or regional level. Sustainability targets are introduced by using critical threshold values for policy- relevant variables of different nature. The paper introduces then a so-called flag...

There is an abundance of literature on cost functions and economies of scale in the rail sector. Results from such studies are used in decisions on privatization, regulation and mergers. Different studies may, however, come to very different conclusions. In this paper we examine the results of...