1. Moskowitz, R.W. Diseases associated with the deposition of calcium pyrophosphate or hydroxyapatite. In: Textbook of Rheumatology, 4th ed., Eds.: Kelley, W.N., Harris, E.D., Ruddy, S., Sledge, C.B., Philadelphia, W.B. Saunders Company, 1993, 1337–1354.
2. Ryan, L.M., McCarty, D.J. Calcium pyrophosphate crystal deposition disease; pseudogout; articular chondrocalcinosis. In: Arthritis and Allied Conditions, 12th ed., Eds.: McCarty, D.J., Koopman, W.J., Philadelphia, Lea and Febiger, 1993, 1835–1855.
3. Terkeltaub, R.A. Pyrophosphate arthropathy. Rheumatology Review 1993, 2, 1–9.
4. McCarty, D.J. Calcium pyrophosphate dihydrate crystal deposition disease. Br J Rheum 1993, 32, 177–180.
5. Doherty, M., Dieppe, P., Watt, I. Pyrophosphate arthropathy: a prospective study. Br J Rheum 1993, 32, 189–196.