Aerospace series – Cellular elastomeric materials, open and closed cells – Semi-finished products and moulded parts; technical specification
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/1999

Aerospace series – Cellular elastomeric materials, open and closed cells – Semi-finished products and moulded parts – Technical specification; Text in German and English; Inactive for new design
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2012