1. Andrianov, V.I., Development of the system of crystallographic programs RENTGEN for the computers NORD, SM-4 and US, Kristallografiya, 1987, vol. 32, pp. 228–231.
2. Angel, R.J. Structural variation in wollastonite and bustamite, Mineral. Mag., 1985, vol. 49, pp. 37–48.
3. Angel, R.J., Transformation mechanisms between singlechain silicates, Am. Mineral., 1986, vol. 71, pp. 1441–1454.
4. Brown, I.D. and Altermatt, D. Bond-valence parameters obtained from a systematic analysis of the Inorganic Crystal Structure Database, Acta Crystallogr., 1985, vol. 41, pp. 244–247.
5. Burnham, C.W., Ferrobustamite: the crystal structures of two Ca, Fe bustamite-type pyroxenoids: correction, Z. Kristallogr., 1975, vol. 142, pp. 450–452.