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2. Oesophageal Motility in Connective Tissue Disease;Clark;Brit. J. Derm.,1967
3. Discussioni Anatomico-Pratiche di un raro, e stravagante cutaneo in una giovane Donna felicemente curato in questo grande Ospedale degl'Iincurabili;Curzio,1753
4. Über die Beziehung der Sklerodermie zu den autotoxischen Erythemen;Ehrmann;Wien Med. Wschr.,1903
5. Treatment of Diffuse Progressive Scleroderma;Evans;J. A. M. A.,1953