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Pfaffeneder T, Hackner B, Truss M, Münzel M, Müller M, Deiml CA, Hagemeier C, Carell T (30 June 2011). "The Discovery of 5-Formylcytosine in Embryonic Stem Cell DNA". Angew. Chem. Int. Ed. 50 (31): 7008–7012. doi:10.1002/anie.201103899. PMID21721093.