Rieger, A.; Bürger, W.; Hiepe, F.; Schade, R. [Determination of Human Serum CRP Using a Chicken Egg Yolk Antibody (IgY) to Avoid Interferences With Rheumatoid Factors. Comparison With Mammalian Antibodies] [Article in German]. ALTEX 1996, 13, 57-61.