1. The Gm(r) serum group;Brandtzag;Acta genet.,1961
2. Autoanticuerpos en le poliartrites cronica progresiva metodo sencillo de demonstracion con posibles aplicaciones diagnosticas;Foz;Rev. diagn. biologico.,1954
3. Specificity of the reaction between rheumatoid factors and gamma globulin;Fudenberg;J. exp. Med.,1961
4. Agglutination of erythrocytes coated with “incomplete” anti-Rh by certain rheumatoid arthritic sera and some other sera. The existence of human serum groups;Grubb;Acta path. microbial. scand.,1956
5. Interactions between rheumatoid arthritic sera and human gamma globulin;Grubb;Proc. 6th Congr. Enrop. Soc. Haemat. Copenhagen 1957. Acta haemat.,1958