Gas supply systems - Underground gas storage - Part 3: Functional recommendations for storage in solution-mined salt cavities; German version EN 1918-3:1998— 16 стр.
Gas infrastructure - Underground gas storage - Part 3: Functional recommendations for storage in solution-mined salt caverns; German version EN 1918-3:2016— 43 стр.
Gas infrastructure - Underground gas storage - Part 3: Functional recommendations for storage in solution-mined salt caverns; German version EN 1918-3:2016— 43 стр.