Silage and liquid manure containers, containers in biogas plants, bunker silos and trench silos – Part 2: Silage and liquid manure containers and containers in biogas plants made of concrete
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 09/01/2015

Silage and liquid manure containers – Part 2: Design principles – Silage and liquid manure containers made of reinforced concrete, precast reinforced concrete elements, concrete blocks and concrete blocks acting as lost formwork
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2004