uldis@bda.lv
janis.grundspenkis@rtu.lv
janis@bda.lv
signe@bda.lv
© 2020 Uldis Zandbergs, Jānis Grundspeņķis, Jānis Judrups, Signe Briķe, published by Riga Technical UniversityThis work is licensed under the Creative Commons Attribution 4.0 License.