About this article
Published Online: Feb 28, 2017
Page range: 39 - 47
DOI: https://doi.org/10.1515/nor-2017-0353
© by Esa Väliverronen
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Esa Väliverronen
Dep. of Communication, University of Helsinki, P.O. Box 54, FIN-00014 Helsinki, Finland