1. Ca–Mg and K–Mg mixing around non-bridging oxygen in silicate glasses: an investigation using Oxygen-17 MAS and 3QMAS NMR;Allwardt;Am. Mineral.,2004
2. Allwardt, J.R., Stebbins, J.F., Frost, D.J., Schmidt, B.C., 2003a. The effect of modifier cations on the amount of five- and six-coordinated aluminum present in high-pressure aluminosilicate glasses. Bayerisches Forschunsintitut für Experimentelle Geochemie und Geophysik, Universität Bayreuth, Annual Report, 3.7i.
3. Bonding preferences of non-bridging oxygen: evidence from 17O MAS and 3QMAS NMR on calcium aluminate and low-silica Ca-aluminosilicate glasses;Allwardt;Am. Mineral.,2003
4. Allwardt, J.R., Stebbins, J.F., Schmidt, B.C., Frost, D.J., in press. The effect of composition, compression, and decompression on the structure of high-pressure aluminosilicate glasses: An investigation utilizing 17O and 27Al NMR. In: Chen, J.Q., Wang, Y., Duffy, T., Shen, G., Dobrzhinetskaya, L. (Eds), Frontiers in High Pressure Research: Geophysical Applications. Elsevier, Amsterdam.
5. Transformation of fivefold-coordinated silicon to octahedral silicon in calcium silicate, CaSi2O5;Angel;Am. Mineral.,1997