1. J. J. Spijkerman, F. C. Ruegg, and J. R. de Voe,Applications of the Mössbauer Effect in Chemistry and Solid State Physics(I.A.E.A., Vienna, Austria, 1966), p. 53;
2. Mössbauer velocity calibration via interferometry
3. Optical Method for Absolute Velocity Calibration of Mössbauer Spectrometers
4. G. M. Kalvius and E. Kankeleit,Mössbauer Spectroscopy and its Applications(I.A.E.A., Vienna, Austria, 1972), p. 38.
5. J. Spijkerman,Introduction to Mössbauer Spectroscopy, edited by L. May (Hilger, London, 1971), p. 28.