Jäger, C., Hartmann, P., Kunath-Fandrei, G., Hirsch, O., Rehak, P., Vogel, J., et al. (1996). Novel opportunities of structural investigations of glasses by 2D NMR, multiple quantum NMR and Al-27 MAS NMR lineshape analysis. Berichte der Bunsen-Gesellschaft für Physikalische Chemie, 100(9), 1560-1562. doi:10.1002/bbpc.19961000942.