1. Deer, W.A., Howie, R.A., Zussman, J.: Rock-forming minerals, vol.2 Chain silicates. London: Longmans 1963
2. Hutchison, J. L., Lincoln, F. J., Anderson, J. S.: Z. Anorg. Allgem. Chem., in press
3. Jefferson, D.A., Thomas, J.M.: Electron-microscope analysis of disorder in wollastonite. Mat. Res. Bull. 10, 761?768 (1975a)
4. Jefferson, D. A., Thomas, J. M.: Studies of disordered polytypic systems. EMAG Meeting, Bristol, England (1975 b)
5. Jeffery, J.W.: Unusual X-ray diffraction effects from a crystal of wollastonite. Acta Cryst. 6, 821?825 (1953)