IEC 61252:1993
Electroacoustique - Specifications Des Exposimetres Acoustiques Individuels (Edition 1.0; CENELEC EN 61 252: 1995; Amendment 1: 10/2000)
Electroacoustics - Specifications for Personal Sound Exposure Meters (Edition 1.0; CENELEC EN 61 252: 1995; Amendment 1: 10/2000)