© 2016 J. Hyvarinen and J. Suhonen. This is an open access article distributed under the Creative Commons Attribution License. The publication of this article was funded by SCOAP3.
Ellei muuten mainita, aineiston lisenssi on © 2016 J. Hyvarinen and J. Suhonen. This is an open access article distributed under the Creative Commons Attribution License. The publication of this article was funded by SCOAP3.