TY  - JOUR
AU  - Najafi Birgani, Raziye
AU  - Kiasat, AliReza
TI  - Phosphosulfonic acid as an soild acid supported on nanosilica extracted from rice husk in Polyhydroqinilion Synthesis
JO  - Journal of Chemical Reactivity and Synthesis
VL  - 2
IS  - 1
SP  - 28
EP  - 35
PY  - 2012
DO  - 
ER  -