The B cell repertoire of patients with rheumatoid arthritis. II. Increased frequencies of IgG+ and IgA+ B cells specific for mycobacterial heat‐shock protein 60 or human type II collagen in synovial fluid and tissueUlrike Rudolphi, Inga Melchers, Stefan H. E. Kaufmann et al.|Arthritis & Rheumatism|1997Cited by 55