Natural stone test methods - Determination of resistance to ageing by SO<(Index)2> action in the presence of humidity; German version EN 13919:2002— 8 стр.
Natural stone test methods - Determination of the dynamic modulus of elasticity (by measuring the fundamental resonance frequency); German version EN 14146:2004— 16 стр.
Metallic and other non-organic coatings - Sulfur dioxide test with general condensation of moisture (ISO 6988:1985); German version EN ISO 6988:1994— 8 стр.