Protective devices against diagnostic medical X-radiation - Part 2: Protective glass plates (IEC 61331-2:1994); German version EN 61331-2:2002— 14 стр.
Protective devices against diagnostic medical X-radiation - Part 2: Translucent protective plates (IEC 61331-2:2014); German version EN 61331-2:2014— 17 стр.