1. Bates, J. I., Lewey, F. H., Reiners, C. R.: The reaction of cerebral tissue to silver, tantalum and zirconium. J. Neurosurg.5, 349 (1948).
2. Burke, G. L.: The corrosion of metals in tissues and an introduction to tantalum mesh. Arch. Surg.65, 856 (1952).
3. Cabezas, G., Austin, J., Kopg, G., Nadel, J. A.: Roentgenographic method for studying small airways in vivo: Effect of parasympathetic nerve stimulation. Clin. Res.17, 413 (1969).
4. Christoforidis, A. J., Nelson, S. W., Thomashefski, J. F.: Effects of bronchography on pulmonary function. Amer. J. Physiol.167, 812 (1951).
5. Clarke, S. W., Graf, P. D., Nadel, J. A.: In vivo visualization of small airway constriction after pulmonary microembolism in cats and dogs. J. appl. Physiol.29, 646 (1970).