%0 Journal Article
%T An Eco-Friendly Improved Protocol for the Synthesis of Bis(3-indolyl)methanes Using Poly(4-vinylpyridinium)hydrogen Sulfate as Efficient, Heterogeneous, and Recyclable Solid Acid Catalyst
%A Janardhan Banothu
%A Rajitha Gali
%A Ravibabu Velpula
%A Rajitha Bavantula
%J ISRN Organic Chemistry
%D 2013
%I Hindawi Publishing Corporation
%R 10.1155/2013/616932
%U http://dx.doi.org/10.1155/2013/616932