1. Pušnik I., Drnovšek J.: Physiol. Meas. 26, 1075 (2005)
2. European Committee for Standardization, EN 12470-5:2003: Clinical Thermometers—Part 5: Performance of Infra-Red Ear Thermometers (with Maximum Device) (CEN, Brussels, 2003)
3. European Union, Council Directive 93/42/EEC of 14 June 1993 Concerning Medical Devices (Medical Device Directive-MDD), Official Journal L 169 (1993)
4. ASTM, Designation E 1965–09: Standard Specification for Infrared Thermometers for Intermittent Determination of Patient Temperature. Annual Book of ASTM Standards 1998 (ASTM, West Conshohocken, PA, 1998)
5. JIS T 4207: Japanese Industrial Standard: Infrared Ear Thermometers (2005)