1. Handleiding meten en rekenen industrielawaai (Manual for measuring and calculating industrial noise), Den Haag, 1999 (in Dutch).
2. TA-Lärm: Technische Anleitung zum Schutz gegen Lärm (Technical guideline for noise protection), 1998 (in German).
3. A.J. Kerkers, Windpark Rheder Moor; prognose geluidsimmissie vanwege 17 Enercon 66 windturbines (Wind park Rheder Moor; prognosis of sound immission from 17 Enercon 66 wind turbines), Lichtveld Buis & Partners bv raadgevende ingenieurs, 1999 (in Dutch).
4. S. Ljunggren, Expert group study on ‘Recommended practices for wind turbine testing and evaluation’, part 10. Measurement of noise immersion from wind turbines at noise receptor locations, Department of Building Science, The Royal Institute of Technology, Sweden, 1994/1997.
5. IEC International Standard 61400-11, Wind turnbine generator systems—Part 11: Acoustic noise measurement techniques, IEC 61400-11:1998(E).