1. 2012 Fifth European Working Conditions Survey, Publications Office of the European Union, Luxembourg. http://dx.doi.org/10.2806/34660. ISBN 978-92-897-1062-6.
2. ISO 2631-1:1997 Mechanical Vibration and Shock-Evaluation of Human Exposure to Whole-Body Vibration – General Requirements, ISO, Geneva, Switzerland.
3. ISO 5349-1:2001 Mechanical Vibration-Measurement and Evaluation of Human Exposure to Hand-Transmitted Vibration – General Requirements, ISO, Geneva, Switzerland.
4. ISO 5349-2:2001 Mechanical Vibration-Measurement and Evaluation of Human Exposure to Hand-Transmitted Vibration – Practical Guidance for Measurement at the Workplace, ISO, Geneva, Switzerland.
5. ISO 28927-5:2009 Hand-Held Portable Power Tools – Test Methods for Evaluation of Vibration Emission – Part 5: Drills and Impact Drills, ISO, Geneva, Switzerland.