© IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Ellei muuten mainita, aineiston lisenssi on © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.