DIN EN ISO 11957:2010-01 Acoustics - Determination of sound insulation performance of cabins - Laboratory and in situ measurements (ISO 11957:1996); German version EN ISO 11957:2009
2010DIN EN ISO 11957:2010 Acoustics - Determination of sound insulation performance of cabins - Laboratory and in situ measurements (ISO 11957:1996); German version EN ISO 11957:2009
1996DIN EN ISO 11957:1997 Acoustics — Determination of sound insulation performance of sound cabin protectings — Laboratory and in situ measurements