1. Acta path;BERGENDAHL, G.; ENGFELDT, B.;microbiol. scand; Preparing material for microradiography. Some technical considerations,1960
2. Acta orthop;BJELLE, A.O.; SUNDEN, G.;scand; Pyrophosphate synovitis. Crystal synovitis caused by calcium pysophosphate dihydrate (CPPD) as a diagnostic problem in orthopaedic patients) AND SUNDSTROM, B,1971
3. Arthr;BRIGHTON, C.T.;and Rheum,1967
4. BUNDENS, W. D., BRIGHTON, C. T., AND WEITZMAN, G. (1965) J. Bone Jt Surg., 47A, 111 (Primary articular-cartilage calcification with arthritis. (Pseudogout syndrome))
5. Ann;CURREY, H.L.F.; KEY, J.J.; MASON, R.M.; SWETTEHAM, K.V.;rheum. Dis; Significance of radiological calcification ofjoint cartilage,1966