Viviana D. Barreda, Luis Palazzesi, Maria C. Tellería, Eduardo B. Olivero, J. Ian Raine and Félix Forest (2015). "Early evolution of the angiosperm clade Asteraceae in the Cretaceous of Antarctica". Proceedings of the National Academy of Sciences of the United States of America. in press: 10989–10994. doi:10.1073/pnas.1423653112.Pemeliharaan CS1: Menggunakan parameter penulis (link)