oksana.nikiforova@rtu.lv
ludmila.kozacenko@rtu.lv
dace.ahilcenoka@rtu.lv
konstantins.gusarovs@gmail.com
dainis.ungurs@rtu.lv
maris.jukss@mail.mcgill.ca
© 2016 Oksana Nikiforova, Ludmila Kozacenko, Dace Ahilcenoka, Konstantins Gusarovs, Dainis Ungurs, Maris Jukss, published by Riga Technical UniversityThis work is licensed under the Creative Commons Attribution 4.0 License.