7American Society for Testing and Materials. E1965-98, Standard specification for infrared thermometers for inter- mittent determination of patient temperature [S]. West Conshohocken: ASTM, 2003.
8European Committee for Standardization. EN 12470-5: 2003(E) ,Clinical thermometers. Performance of infra-red ear thermometers (with maximum device)[S~. Brussels: CEN,2003.
