References
- Frantzell, A. (1951) Effect of focal size, shape and “structure” on the roentgenographic representation of small-calibre metal objects. Acta radiol., 35, p. 265.
- Imhoof, E. (1954) Uber Stielstrahlung. Rontgen- u. Lab.-Prax., 7, p. 168.
- Janker, R. and Rossmann, K. (1958) Grundriss der Rontgentherapie, Springer-Verlag, Wurzburg
- Kemp, F. H. and Nichols, A. F. (1958) Focal spot sizes. Brit. J. Radiol., 31, p. 486.
- Kuntke, A. H. G. (1957) On the determination of roentgen tube focal spot sizes by pin-hole camera roentgenography. Acta radiol., 47, p. 55.
- Mallet, L. and Maurin, R. (1947) A study of quality and origin of parasitic radiation from the target of an X-ray tube. Radiology, 48, p. 628.
- Mattsson, O. (1955) Practical photographic problems in radiography. Acta radiol.
- Robertson, C. W. and Watson, G. (1958) Precise measurements of focal areas in diagnostic X-ray tubes and their applications in tube development. Brit. J. Radiol., 31, p. 489.
- Thoraeus, R. (1937) The amount of off-focus radiation in beams from various types of roentgen tubes. Acta radiol., 18, p. 753.