© 2014 the Authors & IJIET. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Ellei muuten mainita, aineiston lisenssi on © 2014 the Authors & IJIET. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.