Communication cables - Specifications for test methods - Part 4-4: Environmental test methods - Resistance to solvents and contaminating fluids; German version EN 50289-4-4:2008— 8 стр.
Communication cables - Specifications for test methods - Part 4-12: Environmental test methods - Vertical flame spread test on bunched small communication cables; German version EN 50289-4-12:2004— 9 стр.