1. Acetylcholine Esterase and Cholinesterase;Augustinsson;The Enzymes, New York,1950
2. The Normal Variation of Human Blood Cholinesterase Activity;Augustinsson;Acta physiol. Scand.,1955
3. Colorimetric Method for Determination of Red Blood Cell Cholinesterase Activity in Whole Blood;Fleisher;Arch. Indust. Hyg.,1954
4. Huang , Tso-Yueh unpublished results 1955
5. Determination of the Cholinesterase Activity in Blood and Organs by Automatic Titration. With Some Observations on Serious Errors of the Method and Remarks of the Photometric Determination;Jensen-Holm;Acta pharmacol. et toxicol.,1959