International Scientific Conference “Society, Integration, Education” (SIE-2019) Proceedings, vol. 4, pp. 346-360. Rēzekne Academy of Technologies, May 24th-25th.
International Scientific Conference “Society, Integration, Education” (SIE-2019) Proceedings, vol. 4, pp. 346-360. Rēzekne Academy of Technologies, May 24th-25th.