1. Noise of simulated rainfall on roofs;Ballagh;Appl Acoust,1990
2. New Zealand Ministry of Education, Designing quality learning spaces: Acoustics, version 2.0. 2016.
3. UK Department of Education and Education Funding Agency, Building Bulletin 93: acoustic design of schools – performance standards (v. 17). UK, 2015.
4. ISO 10140-5:2010/Amd. 1:2014. Acoustics - Laboratory measurement of sound insulation of building elements - part 5: Requirements for test facilities and equipment. Amendment 1: rainfall sound. 2014.
5. ISO 10140-1:2016 Acoustics — Laboratory measurement of sound insulation of building elements — Part 1: Application rules for specific products. 2016.