1. Schipper Youdi. Environmental costs in European aviation. Department of Development Economics, Vrije Universiteit: De Boelelaan, Amsterdam; 2003.
2. Schipper Youdi, Rietveld Piet, Nijkamp Peter. Airline deregulation and external costs: a welfare analysis. Department of Spatial and Environmental Economics, Free University: Amsterdam; 2002.
3. ISO 9613-1:1993 Acoustics – Attenuation of sound during propagation outdoors – Part 1: Calculation of the absorption of sound by the atmosphere.
4. ISO 9613-2:1996 Acoustics – Attenuation of sound during propagation outdoors – Part 2: General method of calculation.
5. CERTU, SETRA, LCPC, CSTB. Bruit des infrastructures routières. Méthode de calcul incluant les effets météorologique. NMPB Routes 96.