1. Christman, J.K., Silverstein, S.C. and Acs, G. 1977. p. 91–149. Plasminogen activators. In A. J. Barett (ed.), Proteinases in Mammalian Cells and Tissue. Elsevier-North Holland.
2. Sherry, S. 1980. Mechanisms of fibrinolysis. p. 1294–1305. In W.J. Williams, E. Beutler, A. J. Erslev, and R. W. Rundles, (eds.) Hematology, McGraw-Hill, 2nd edition.
3. The unit of urokinase activity was adopted in 1964 by the committee of Thrombolytic Agents, National Heart Institute. This unit is based on the activity of working standard urokinase preparation which is available from WHO Laboratory International Laboratory for Biological Standards, National Institute for Medical Research, London, England.
4. PRODUCTION BY HUMAN TISSUES IN CULTURE OF IMMUNOLOGICALLY DISTINCT, MULTIPLE MOLECULAR WEIGHT FORMS OF PLASMINOGEN ACTIVATORS*