Tung, Truong Thanh; Christensen, Søren Brøgger; Nielsen, John (2017). «Difluoroacetic Acid as a New Reagent for Direct C-Η Difluoromethylation of Heteroaromatic Compounds». Chemistry - A European Journal23 (72): 18125–18128. doi:10.1002/chem.201704261. PMID28945302.
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Tung, Truong Thanh; Christensen, Søren Brøgger; Nielsen, John (2017). «Difluoroacetic Acid as a New Reagent for Direct C-Η Difluoromethylation of Heteroaromatic Compounds». Chemistry - A European Journal23 (72): 18125–18128. doi:10.1002/chem.201704261. PMID28945302.