© the Authors, 2015. This is an open access article published by Kauno Technologijos Universitetas and distributed under the terms of Creative Commons Attribution 3.0 Unported (CC BY 3.0) Licence.
Ellei muuten mainita, aineiston lisenssi on © the Authors, 2015. This is an open access article published by Kauno Technologijos Universitetas and distributed under the terms of Creative Commons Attribution 3.0 Unported (CC BY 3.0) Licence.