1. http://www.pdf-search-engine.com/iec-61508-pdf.html
2. http://en.wikipedia.org/wiki/Anti-lock_braking_system
3. IEC 61508:1998
4. Poth A SPI of the Requirements-Engineering-Process for Embedded Systems Using SPICE Proceedings of the EuroSPI 2006 Conference
5. Spork G Establishment of a Performance Driven Improvement Program Proceedings of the EuroSPI 2007 Conference