@article{CTT100571186,
  author = {Mojie Cheng and Zeng-Bao Wang and Keiji Sakurai and Fumio Kumata and Takeshi Saito and Takayuki Komatsu and Tatsuaki Yashima},
  title = {Creation of acid sites on SBA-15 mesoporous silica by alumination},
  journal = {Chemistry Letters},
  year = 1999,
}