George Anderson, King Tutankhamun's Dagger, su incose-cc.org, INCOSE Chesapeake Chapter, 1º marzo 2010. URL consultato il 5 giugno 2016 (archiviato dall'url originale l'8 ottobre 2018).
«History is replete with eyewitness accounts of meteors falling from the sky and impacting the earth. Further, there is a continuous record of metal being recovered from the meteoric remnants and frequently being described or labeled as meteoric iron.»