1. Colin Sanders (2011) A guide to vibration analysis and associated techniques in condition monitoring. DAK Consulting - Chiltern House http://www.dakacademy.com/newsite/index.php?option=com_k2&Itemid=500&id=94_007cd4b8b347e375bc10dbe5efbccc28&lang=en&task=download&view=item: 3–8
2. K. Wang, Y. Wang, J.O. Strandhagen, T Yu (2016) Advanced manufacturing and automation V. WIT transactions on engineering sciences, Vol 113 Press WIT: 263–264
3. Marcel Kohler (2016) Industry 4.0 provides new possibilities for predictive maintenance. https://blog.bosch-si.com/industry40/industry-4-0-provides-new-possibilities-for-preventive-maintenance/
4. Vanraj, D. Goyal, A. Saini, S. S. Dhami, B. S. Pabla (2016) Intelligent predictive maintenance of dynamic systems using condition monitoring and signal processing techniques—a review. International conference on Advances in Computing, Communication and Automation (ICACCA): 1–6
5. IFM Electronics (2013) From process monitoring to vibration analysis, condition monitoring systems http://www.ifm.com/download/files/ifm-efector-octavis-brochure-GB-2013/$file/ifm-efector-octavis-brochure-GB-2013.pdf: 5–12