Employer's role in the improvement of safety level in Estonian enterprisesHrenov, Georgi; Reinhold, Karin; Tint, PiiaVide. Tehnologija. Resursi : XI starptautiskas zinatniski praktiskas konferences materiali 2017. gada 15.-17. junijs. 1. sejums = Environment. Technology. Resources : proceedings of the 11th International Scientific and Practical Conference, June 15-17, 2017. Volume I2017 / p. 115-120 : tab http://dx.doi.org/10.17770/etr2017vol1.2520 Snow microwave reflection at mobile phone frequency bandsKoppel, Tarmo; Vilcane, Inese; Tint, Piia; Shishkin, AndreiVide. Tehnologija. Resursi : XI starptautiskas zinatniski praktiskas konferences materiali 2017. gada 15.-17. junijs. 1. sejums = Environment. Technology. Resources : proceedings of the 11th International Scientific and Practical Conference, June 15-17, 2017. Volume I2017 / p. 156-160 : ill http://dx.doi.org/%2010.17770/etr2017vol1.2608