%0 Journal Article %A Manisha Bihani %A Pranjal P. Bora %A Ghanashyam Bez %A Hassan Askari %T Amberlyst A21: A reusable solid catalyst for green synthesis of pyran annulated heterocycles at room temperature %J Comptes Rendus. Chimie %D 2013 %P 419-426 %V 16 %N 5 %I Elsevier %R 10.1016/j.crci.2012.11.018 %G en %F CRCHIM_2013__16_5_419_0