VDE 0113-1-1-2013 Safety of machinery - Requirements for the interfacing of cableless controllers to machinery (IEC 44/686A/CD:2013)
VDE V 0113-204-3-2012 Safety of machinery - Electro-sensitive protective equipment - Part 4-3: Particular requirements for equipment using vision based protective devices (VBPD) - additional requirements when using stereo techniques (VBPDST) (IEC 44/667A/CD:2012)