@article{
  author = {Najafi Birgani, Raziye, Kiasat, AliReza},
  title = {Phosphosulfonic acid as an soild acid supported on nanosilica extracted from rice husk in Polyhydroqinilion Synthesis},
  journal = {Journal of Chemical Reactivity and Synthesis},
  year = {2012},
  volume = {2},
  issue = {1},
  pages = {28-35},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/921628}
}