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2. European methodology for testing the airborne sound insulation characteristics of noise barriers in situ: experimental verification and comparison with laboratory data;Garai;J Acoust Soc Am,2000
3. Measurement of airborne sound insulation of timber noise barriers: comparison of in situ method CEN/TS 1793-5 with laboratory method EN 1793-2;Watts;Appl Acoust,2007
4. European Committee for Standardization. CEN/TS 1793-5:2003 road traffic noise reducing devices – test method for determining the acoustic performance – Part 5: Intrinsic characteristics – In situ values of sound reflection and airborne sound insulation; 2003.
5. British Standards Institution. BS EN 1793-6:2012 road traffic noise reducing devices – test method for determining the acoustic performance – Part 6: Intrinsic characteristics – In situ values of airborne sound insulation under direct sound field conditions; 2012.