@article{article31b83021, title = {Sol-gel preparation of mesoporous Al2O3-SiO2 glasses: structural evolution monitored by solid state NMR}, author = {Jinjun Ren and Long Zhang and Eckert, Hellmut}, year = {2014}, doi = {10.1007/s10971-014-3309-5}, journal = {Journal of Sol-Gel Science and Technology} }