@article{CTT100571199,
  author = {Tokifumi Masukawa and Takayuki Komatsu and Tatsuaki Yashima},
  title = {Alkylation of toluene on HSAPO-5 with various Si concentrations},
  journal = {Zeolites},
  year = 1997,
}

@article{CTT100396075,
  author = {Tokifumi Masukawa and Takayuki Komatsu and Tatsuaki Yashima},
  title = {Strong acid sites generated in aluminosilicate region of SAPO-5},
  journal = {Zeolites},
  year = 1996,
}