Analysis of coffee and coffee products – Determination of 16-O-methyl cafestol content of roasted coffee – HPLC-method
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/1999

Analysis of coffee and coffee products – Determination of 16-O-methyl cafestol content of roasted coffee – HPLC-method
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/2011