@article { olibetara2017, author = "Oliveira, César João Santos and Bettencourt, Ana M. S. and Araújo, Alfredo and Gonçalves, Luís Miguel Barros and Ku?niarska?Biernacka, I. and Costa, Ana Luísa", title = "Integrated analytical techniques for the study of colouring materials from two megalithic barrows", year = "2017" }