Ulysse Lefèvre, Andrea Cau, Aude Cincotta, Dongyu Hu, Anusuya Chinsamy, François Escuillié & Pascal Godefroit (2017). A new Jurassic theropod from China documents a transitional step in the macrostructure of feathers. The Science of Nature, 104: 74 (advance online publication). doi10.1007/s00114-017-1496-y
Lee, M.S.Y. and Worthy, T.H. (2011). "Likelihood reinstates Archaeopteryx as a primitive bird. Biology Letters, published online before print October 26, 2011, doi10.1098/rsbl.2011.0884
Pascal Godefroit, Helena Demuynck, Gareth Dyke, Dongyu Hu, François Escuillié and Philippe Claeys (2013). «Reduced plumage and flight ability of a new Jurassic paravian theropod from China». Nature Communications4: Article number 1394. doi:10.1038/ncomms2389.