First Author:   László Á. Kóczy Catholic University Leuven laszlo.koczy@econ.kuleuven.ac.be   Centre for Economic Studies, Catholic University Leuven Leuven, B-3000, Belgium   +32-16-326811(Phone) +32-16-326811(Fax) http://www.econ.kuleuven.ac.be/ew/academic/econmetr/Members/koczy/default.htm