Radiation sensitive films – Cellulose nitrate film – Part 3: Terms and definitions, properties, utilization, storage
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/2013

Radiation sensitive films – Cellulose nitrate film – Part 3: Terms and definitions, properties, utilization, storage
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/2011