1. Sound shielding efficiency of a barrier with a cylinder at the edge;Fujiwara;Noise Control Eng J,1991
2. Edge-modified noise barriers;Okubo;J INCE Jpn,2004
3. Performance of noise barriers with various edge shapes and acoustical conditions;Ishizuka;Appl Acoust,2004
4. ISO 10847. Acoustics – in situ determination of insertion loss of outdoor noise barriers of all types; 1997.
5. CEN/TS 1793-4. Road traffic noise reducing devices – test method for determining the acoustic performance – Part 4: Intrinsic characteristics – in situ values of sound diffraction, December; 2003.