1. Cardiac complications in spondylitis ankylopoetica;Bernstein;Acta Med Scand,1949
2. Aortitis and aortic endocarditis, an unrcognized manifestation of rheumatoid arthritis;Bauer;Ann Rheum Dis,1951
3. Natural history of rheumatoid spondylitis;Blumberg;Medicine,1956
4. Le coeur dans la spondylarthrite ankylosante;Ruffie;Rhumatologie,1956
5. Rheumatoid spondylitis and aortic insufficiency;Schilder;New Eng J Med,1956