• Exposure to radiofrequency electromagnetic fields from mobile networking in motor-carsKoppel, Tarmo; Ahonen, MikkoBulgarian journal of public health = Българско списание за обществено здраве2015 / p. 24-30 : ill http://ncphp.government.bg/files/spisanie/BG_JURNAL_2015_2_1.pdf
• Microwave radiation has modulation frequency dependent stimulating effect on human EEG rhythmsLass, Jaanus; Hinrikus, Hiie; Bachmann, Maie; Tuulik, ViiuProceedings of the 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society : San Francisco, CA, USA, September 1-5, 2004. Vol. 22004 / p. 4225-4228 : ill https://pubmed.ncbi.nlm.nih.gov/17271236/
• Microwave reflectance and transmittance properties of conductive composite materialsShishkin, Andrei; Koppel, Tarmo; Mironov, Viktor; Hussainova, Irina; Locs, Janis; Haldre, HeldurEnergy procedia2017 / p. 354-361 : ill https://doi.org/10.1016/j.egypro.2017.04.006 https://www.scopus.com/sourceid/17700156736 https://www.scopus.com/record/display.uri?eid=2-s2.0-85020703294&origin=inward&txGid=d209f459c348a8e220fc94faad50c4db https://www.webofscience.com/wos/woscc/full-record/WOS:000416786300052
• Microwave reflection and absorption properties of wet snowKoppel, Tarmo; Haldre, Heldur; Shishkin, AndreiRiga Technical University 57th International Scientific Conference : "Scientific Conference on Economics and Entrepreneurship" (SCEE'2016) : proceedings2016 / p. 170-171 : ill
• Microwave reflection properties of building materials in the working environmentKoppel, Tarmo; Haldre, Heldur56th International Riga Technical University Conference "Scientific Conference on Economics and Entrepreneurship SCEE'2015" : proceedings2015 / p. 148-150 : tab
• Salt water sprayed paper microwave attenuation in shielding workplacesKoppel, Tarmo; Shishkin, Andrei; Haldre, HeldurRiga Technical University 57th International Scientific Conference : "Scientific Conference on Economics and Entrepreneurship" (SCEE'2016) : proceedings2016 / p. 172-173 : ill
• Screen elements made of perforated steel tape and their application for shielding electromagnetic fieldsMironovs, Viktors; Koppel, Tarmo; Lisicins, Mihails; Boiko, IrinaEngineering materials and tribology : selected, peer reviewed papers from the 24th International Baltic Conference on Engineering Materials & Tribology (BALTMATTRIB & IFHTSE 2015), November 5-6, 2015, Tallinn, Estonia2016 / p. 41-47 : ill https://doi.org/10.4028/www.scientific.net/KEM.674.41 https://www.scopus.com/sourceid/12378 https://www.scopus.com/record/display.uri?eid=2-s2.0-84958213577&origin=inward&txGid=ab1b2ae397c17cb1eaf3206448667480
• Shielding inbound microwave electromagnetic radiationKoppel, Tarmo; Haldre, Heldur56th International Riga Technical University Conference "Scientific Conference on Economics and Entrepreneurship SCEE'2015" : proceedings2015 / p. 151-153 : tab
• Study of effects of modulated microwaves by method of face maskingRodina, Anastasia; Lass, Jaanus; Bachmann, T.; Hinrikus, HiieProceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol. 25, A New Beginning for Human Health : volume 4 of 4 : 17-21 September 2003, Cancun, Mexico2003 / p. 3249-3252 https://ieeexplore.ieee.org/document/1280836