1. Ardnne, M. v.: Elektronenümikroskopie. Berlin: Springer 1940.
2. Bellman, S.: Microangiograph. Acta radiol. (Stockh), Supl 102 (1953).
3. Carlström, D., and B.
Lundberg: The projection x-ray microscope for divergent-beam diffraction. J. utrastrut. Ees. 2, 261 (1958).
4. Cosslett, V. E., A.
Engström and H.H.
Pattee: X-ray microscopy and microradiography. New York: Acad. Press 1957.
5. — See surveys in: X-ray microscopy and microradiography, edit,by Cosslett, Engström and Pattee. New York: Acad. Press 1957.