Prepn and use in milk fever: H. Dryerre, J. R. Greig, Vet. Rec. 15, 456 (1935); H. T. Macpherson, J. Stewart, Biochem. J. 32, 76 (1938). Physical properties: L. Seekles, E. Havinga, Nor. Veterinaertidsskr. 58, No. 11, 433-445 (1946), C.A. 43, 1907 (1949). Effect on plasma calcium concentration in sheep: D. A. H. Farningham, Res. Vet. Sci. 39, 70 (1985). Spectrophotometric determn in plasma: D. J. Lyons, K. P. Spann, J. Assoc. Off. Anal. Chem. 68, 160 (1985). Evaluation in bovine milk fever: P. A. Mullen, Vet. Rec. 97, 87 (1975).