Author Details

Kärkkäinen, Salme, <span style="font-size: x-small;"><span style="font-size: 10pt;">Department of Mathematics</span></span><span style="font-size: x-small;"><span style="font-size: 10pt;"> and Statistics, </span></span>University of Jyväskylä, Finland



GRASPA 2019 is organised with the support of "Dipartimento di Economia",  University "G. d'Annnunzio", Chieti-Pescara