1. Adinolfi, M., Gardner, B. (quoted from Propp and Alper 1968): Acta paediat. scand. 56, 450 1967
2. Agarwal, D. P., Benkmann, H. G., Goedde, H. W.: Genetic polymorphism of the third component of complement (C3) and levels of ? 1C? 2A-globulin in sera of German and Spanish populations. Hum. Hered. 22, 356?361 (1972)
3. Agostini, A., Vergani, C., Stabilini, R.: Immunochemical quantitation of serum 1a-globulin in health and disease. Z. klin. Chem. 6, 446?448 (1968)
4. Aho, K., Julkunen, H., Laine, V., Ripatti, N., Wager, O.: Clinical evaluation of the serological tests in rheumatoid arthritis. I. Normal series collected by random sampling. Acta rheum. scand. 7, 201 (1961)
5. Alper, C. A., Abramsan, N., Johnstan, R. B., McCall, C. E., Jandl, J. H., Rosen, F. S.: Increased susceptibility to infection associated with a defect of complement metabolism. J. clin. Invest. 47, 1a (Abstr.) (1968a)