Miras, Y.; Ejarque, A.; Orengo, H.A.; Riera, S.; Palet, J.M.; Poiraud, A., "Prehistoric impact on landscape and vegetation at high altitudes: an integrated palaeoecological and archaeological approach in the eastern Pyrenees (Perafita valley, Andorra)", Plant Biosystems, 144:4, p. 924-939.