Chandrashekharappa, S., Venugopala, K. N., Venugopala, R., & Odhav, B. (2016). Silica-Sulfuric Acid: Novel, Simple, Efficient and Reusable Catalyst for Hydration of Nitrile to Amide. Asian Journal of Chemistry, 28(10), 2177–2180. https://doi.org/10.14233/ajchem.2016.19907