Acoustic study on motorcycle helmets with application of novel porous material
Lavrentjev, Jüri
;
Rämmal, Hans
SAE Technical Paper Series : The 25th Small Engine Technology Conference (SETC2019) : Small Powertrains–Innovating for Their Future Role, International Conference Center Hiroshima, November 19-21, 2019 : Final program
2020
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Paper 2019-32-0531, p. 1-7 : ill
https://www.sae.org/publications/technical-papers/content/2019-32-0531/
http://www.setc-jsae.com/2019docs/SETC2019_FinalProgram_all.pdf
https://www.scopus.com/sourceid/21100239259
https://www.scopus.com/record/display.uri?eid=2-s2.0-85096585270&origin=inward&txGid=59a9b138e4d65dfbc13e09e34391ded0
Kolledžite vaktsineeritud tudengid pääsevad maskikandmisest [Võrguväljaanne]
Kalda, Erik
pohjarannik.postimees.ee
2021
https://pohjarannik.postimees.ee/7328418/kolledzite-vaktsineeritud-tudengid-paasevad-maskikandmisest
Вакцинированным студентам колледжей не придется носить маску [Online resource]
Kalda, Erik
postimees.ee
2021
https://severnojepoberezhje.postimees.ee/7328610/vakcinirovannym-studentam-kolledzhey-ne-pridetsya-nosit-masku
Индивидуальные средства защиты от действия электрического тока : учебное пособие
Kiivet, Gunnar
1983
https://www.ester.ee/record=b1313597*est