1. Nedwell JR, Langworthy J, Howell D (2003) Assessment of sub-sea acoustic noise and vibration from offshore wind turbines and its impact on marine wildlife; initial measurements of underwater noise during construction of offshore windfarms, and comparison with background noise, Subacoustech Report ref: 544R0424, published by COWRIE
2. Ainslie MA, de Jong CAF, Dol HS, Blaquière G, Marasini C (2009) Assessment of natural and anthropogenic sound sources and acoustic propagation in the North Sea. TNO report TNO-DV, p. C085
3. Thomsen F, Lüdemann K, Kafemann R, Piper W (2006) Effects of offshore wind farm noise on marine mammals and fish. Biola, Hamburg, Germany on behalf of COWRIE Ltd, p. 62
4. Thomsen F (2009) Assessment of the environmental impact of underwater noise. OSPAR Commission. Biodiversity Series, vol. 436
5. Southall BL, Bowles AE, Ellison WT, Finneran JJ, Gentry RL, Greene CL Jr, Kastak D, Ketten DR, Miller JH, Nachtigall PE, Richardson WJ, Thomas JA, Tyack PL (2007) Marine mammal noise exposure criteria: initial scientific recommendations. Aquat Mamm 33(4):411–521