1. Armstrong, D. A. J., Mills, G. L.: A highly purified kinin-forming enzyme from human plasma. Biochem. Pharmacol. 13, 1393?1402 (1964)
2. Bertolini, A., Mucci, P., Sternieri, E.: La bradichinina come possibile agente causale dell'emicrania. (IV) Rapporto tra gli effetti comportamentali e circolatorio della bradichinina, iniettata per via endocarotidea, nel coniglio. Boll. Soc. ital. Biol. sper. 43, 794?797 (1967)
3. Bertolini, A., Mucci, P., Sternieri, E.: Behavioural effect of bradykinin injected into the cerebro-spinal fluid. In: P. Mantegazza and E. W. Horton: Prostaglandins, Peptides and Amines, pp. 129?134. London-New York: Academic Press 1969
4. Braun, C., Guzman, F., Horton, E. W., Lim, R. K. S., Potter, G. D.: Visceral receptors, pain, bradykinin, and analgesic agents. J. Physiol. (Lond.) 155, 13P-14P (1961)
5. Collier, H. O. J., James, G. W. L., Schneider, C.: Antagonism by aspirin and fenamates of bronchoconstriction and nociception induced by adenosine-5?-triphosphate. Nature (Lond.) 212, 411?412 (1966)