Methods of testing soils for engineering purposes, Method 2.1.5: Soil moisture content tests - Determination of the moisture content of a soil - Infrared lights method (subsidiary method)
Electromagnetic compatibility (EMC) - Part 2-8: Environment - Voltage dips and short interruptions on public electric power supply systems with statistical measurement results (IEC/TR 61000-2-8:2002)
Electromagnetic compatibility (EMC) - Part 3: Limits - Section 6: Assessment of emission limits for distorting loads in MV and HV power systems - Basic EMC publication (IEC/TR 61000-3-6:1996)
Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 3: Protocol for the preparation of conformity verification reports for the IEC 61010 2nd edition series .