1. The normal serum cystine aminopeptidase (CAP) range in pregnancy;Chapman, L.; Burrows-Peakin, R.; Jowett, T.P.; Rege, V.P.; Silk, E.;Clinica Chimica Acta,1973
2. Spectrofluorimetric assay of serum cystine aminopeptidase in normal and diabetic pregnancy compared with total oestrogen excretion;Chapman, L.; Silk, E.; Skupny, A.; Tooth, E.A.; Barnes, A.;Journal of Obstetrics and Gynaecology of the British Commonwealth,1971
3. Spectrophotorretric end-point method for assay of serum cystyl-aminopepsidase in pregnancy;Durham, B.H.;Clinical Chemistry,1976
4. Hashimoto, T. (1961). Studies on L-cystine-aminopepsidase. Journal of the Japanese Obstetrical and Gynaecological Society, 8, 87-104.
5. Cystine aminopepsidase in normal and complicated pregnancies;Hurry, D.J.; Tovey, J.E.; Robinson, D.A.; Beynon, C.L.; Cooper, K.;Journal of Obstetrics and Gynaecology of the British Commonwealth,1972