1. Michalski L., Eckersdorf K., McGhee J.: Temperature Measurement. Wiley, Chichester (1991)
2. European Committee for Electrotechnical Standardization, European Standard EN 60335-1:2002, Household and Similar Electrical Appliances—Safety—Part 1: General Requirements (European Committee for Electrotechnical Standardization, Brussels, 2002)
3. International Standard IEC 60335-1:2001, Household and Similar Electrical Appliances—Safety—Part 1: General requirements (International Electrotechnical Commission, Geneva, 2001)
4. European Committee for Electrotechnical Standardization, European Standard EN 50144-1:1998, Safety of Hand-Held Electric Motor Operated Tools—Part 1: General Requirements (International Electrotechnical Commission, Brussels, 1998)
5. European Committee for Electrotechnical Standardization, European Standard EN 61029-1:2000, Safety of Transportable Motor-Operated Electric Tools—Part 1: General Requirements (International Electrotechnical Commission, Brussels, 2000)