«The Antikythera Mechanism Research ProjectArchivado el 28 de abril de 2008 en Wayback Machine.», The Antikythera Mechanism Research Project. Retrieved July 1, 2007. Quote: «The Antikythera Mechanism is now understood to be dedicated to astronomical phenomena and operates as a complex mechanical "computer" which tracks the cycles of the Solar System».
Britannica on Greek civilization in the 5th century - Military technology Quote: «The 7th century, by contrast, had witnessed rapid innovations, such as the introduction of the hoplite and the trireme, which still were the basic instruments of war in the 5th» y «But it was the development of artillery that opened an epoch, and this invention did not predate the 4th century. It was first heard of in the context of Sicilian warfare against Carthage in the time of Dionysius I of Syracuse».
Humphris, Jane; Charlton, Michael F.; Keen, Jake; Sauder, Lee; Alshishani, Fareed (2018). «Iron Smelting in Sudan: Experimental Archaeology at The Royal City of Meroe». Journal of Field Archaeology43 (5): 399. ISSN0093-4690. doi:10.1080/00934690.2018.1479085.
Humphris J, Charlton MF, Keen J, Sauder L, Alshishani F (June 2018). «Iron Smelting in Sudan: Experimental Archaeology at The Royal City of Meroe». Journal of Field Archaeology43 (5): 399-416. ISSN0093-4690. doi:10.1080/00934690.2018.1479085.
Koetsier, Teun (2001), «On the prehistory of programmable machines: musical automata, looms, calculators», Mechanism and Machine Theory (Elsevier) 36 (5): 589-603, doi:10.1016/S0094-114X(01)00005-2..
Humphris, Jane; Charlton, Michael F.; Keen, Jake; Sauder, Lee; Alshishani, Fareed (2018). «Iron Smelting in Sudan: Experimental Archaeology at The Royal City of Meroe». Journal of Field Archaeology43 (5): 399. ISSN0093-4690. doi:10.1080/00934690.2018.1479085.
Humphris J, Charlton MF, Keen J, Sauder L, Alshishani F (June 2018). «Iron Smelting in Sudan: Experimental Archaeology at The Royal City of Meroe». Journal of Field Archaeology43 (5): 399-416. ISSN0093-4690. doi:10.1080/00934690.2018.1479085.
Martínez, Pedro (19 de octubre de 2000). «Islam, colonización y descolonización»(Audio). Madrid: Fundación Juan March. Consultado el 19 de noviembre de 2012. «minuto 37 y siguientes».
«The Antikythera Mechanism Research ProjectArchivado el 28 de abril de 2008 en Wayback Machine.», The Antikythera Mechanism Research Project. Retrieved July 1, 2007. Quote: «The Antikythera Mechanism is now understood to be dedicated to astronomical phenomena and operates as a complex mechanical "computer" which tracks the cycles of the Solar System».
Georges Ifrah (2001). The Universal History of Computing: From the Abacus to the Quatum Computer, p. 171, Trans. E.F. Harding, John Wiley & Sons, Inc. (See [1])