Determination of the dispersion degree of metals using gas chemisorption – Part 1: Principles
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/2004

Determination of the dispersion degree of metals using gas chemisorption – Part 1: Principles
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/2017