1. Amer;DAVIDSOHN, I.;J. clin. Path; Isoagglutinin titers in serum disease, in leukemias, in infectious mononucleosis, and after blood transfusions,1938
2. Brit;FAIRLEY, G.H.; AKERS, R.J.;J. Haemat; Antibodies to blood group A and B substances in reticuloses,1962
3. Erworbener Isoagglutininmangel bei Blutkrankheiten;GEYER, G.; KEIBL, E.; SPEISER, P.;in 'Proc. VII Congr. Europ. Soc. Haemat., London,1960
4. Acta rheum;HARTMANN, O. (Unpublished observations). KAss, E,1968
5. (Blood groups in rheumatoid arthritis);KORNSTAD, A.M.G.; KORNSTAD, L.; GULDBERG, D.;Nature (Lond.),1965