1. Vitamins and antivitamin K. Tautomerism of dicoumarol;Chmielewska;Tetrahedron,1958
2. Nuclear methylation of coumarins;Gupta;J. sci. industr. Res. (India),1957
3. The anticoagulant from sweet clover hay;Link;Harvey Lect.,1943
4. Chemical studies of the antivitamin K series of compounds;Mentzer;Bull. Soc. chim. Fr.,1945
5. Prothrombin time determination with thrombokinase “Geigy.” (G. 23787.);Montigel;Schweiz, med. Wschr.,1952