1. Urokinase, an activator of plasma profibrinolysin extracted from urine;Sobel;Am. J. Physiol.,1952
2. An activator of plasminogen in normal urine;Astrup,1952
3. The fibrinolytic activity of urine;Williams;Brit. J. Exper. Path.,1951
4. Studies on urokinase: an activator of plasma profibrinolysin extracted from urine;Guest,1953
5. The application of foam technique to the partial purification of a urine activator of plasma profibrinolysin;Celander;Arch. Biochem.,1955