Vijay Nair, Smitha C. Mathew, Akkattu T. Biju, and Eringathodi Suresh (2007). «A Novel Reaction of the “Huisgen Zwitterion” with Chalcones and Dienones: An Efficient Strategy for the Synthesis of Pyrazoline and Pyrazolopyridazine Derivatives». Angew. Chem. Int. Ed.46 (12): 2070-2073. PMID17286329. doi:10.1002/anie.200604025.
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Vijay Nair, Smitha C. Mathew, Akkattu T. Biju, and Eringathodi Suresh (2007). «A Novel Reaction of the “Huisgen Zwitterion” with Chalcones and Dienones: An Efficient Strategy for the Synthesis of Pyrazoline and Pyrazolopyridazine Derivatives». Angew. Chem. Int. Ed.46 (12): 2070-2073. PMID17286329. doi:10.1002/anie.200604025.