aleksejs.grocevs@rtu.lv
natalija.prokofjeva@rtu.lv
stefan.leye@iff.fraunhofer.de
© 2015 Aleksejs Grocevs, Natalya Prokofyeva, Stefan Leye, published by Riga Technical UniversityThis work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.