1. D. I. Abramson (1962 ): Blood vessels and lymphatics. New York-London.
2. THE SKIN CAPILLARIES IN RAYNAUD'S DISEASE
3. A. H. Buss (1966 ): Psychopathology. New York.
4. E. Davis, and J. Landau (1966 ): Clinical capillary microscopy. Springfield, Ill.