Sigiriya Ancient City of Tauric Chersonese and its Chora Ancient Ferrous Metallurgy Sites of Burkina Faso Ancient Ksour of Ouadane, Chinguetti, Tichitt and
2007, p. 12. ^ Drozdov 2007, pp. 12–14. ^ Eskin, Dmitry (2008). Physical metallurgy of direct chill casting of aluminum alloys. CRC Press. p. 1. ISBN 978-1-4200-6282-3