Acoustic studies of micro-perforates for small engine silencersKabral, Raimo; Rämmal, Hans; Lavrentjev, JüriSAE technical papers2012 https://www.sae.org/publications/technical-papers/content/2012-32-0107/ Acoustic studies on small engine silencer elementsKabral, Raimo; Rämmal, Hans; Lavrentjev, Jüri; Auriemma, FabioSAE technical papers2011 / [8] p. : ill Acoustical methods for investigating turbocharger flow instabilitiesKabral, Raimo; Rämmal, Hans; Abom, MatsSAE Technical Papers2013 Aero-acoustic studies and innovative noise control with application to modern automotive gas exchange system = Kaasaegse automootori gaasivahetussüsteemide aeroakustilised uuringud ja müra vähendamise innovaatilised meetodidKabral, Raimo2015 https://digi.lib.ttu.ee/i/?2502 https://www.ester.ee/record=b4481436*est A complete acoustic analysis on the passive effect of small engine silencer elementsKabral, Raimo; Rämmal, Hans; Lavrentjev, Jüri; Auriemma, FabioProceedings of International Congress on Sound and Vibration (ICSV18) : Rio de Janeiro, Brazil, 10 to 14 July 20112011 A new type of compact silencer for high requency noiseKabral, Raimo; Auriemma, Fabio; Knutsson, Magnus; Abom, MatsProceedings of the 9th International Conference of DAAAM Baltic Industrial Engineering, 24-26th April 2014, Tallinn, Estonia2014 / p. 29-35 : ill A novel design for cruiser type motorcycle silencer based on micro-perforated elementsKabral, Raimo; Rämmal, Hans; Auriemma, Fabio; Luppin, Janek; Kõiv, Risto; Tiikoja, Heiki; Lavrentjev, JüriSAE technical papers2012 https://www.researchgate.net/publication/236005547_A_Novel_Design_for_Cruiser_Type_Motorcycle_Silencer_Based_on_Micro-Perforated_Elements