Moran, M. E. (December 2006). «The da Vinci robot». J. Endourol.20 (12): 986–90. doi:10.1089/end.2006.20.986. PMID17206888. «... the date of the design and possible construction of this robot was 1495 ... Beginning in the 1950s, investigators at the University of California began to ponder the significance of some of da Vinci's markings on what appeared to be technical drawings ... It is now known that da Vinci's robot would have had the outer appearance of a Germanic knight.».
Moran, M. E. (December 2006). «The da Vinci robot». J. Endourol.20 (12): 986–90. doi:10.1089/end.2006.20.986. PMID17206888. «... the date of the design and possible construction of this robot was 1495 ... Beginning in the 1950s, investigators at the University of California began to ponder the significance of some of da Vinci's markings on what appeared to be technical drawings ... It is now known that da Vinci's robot would have had the outer appearance of a Germanic knight.».
nytimes.com
Kolesnikov-Jessop, Sonia (November 25, 2011). «Chinese Swept Up in Mechanical Mania». The New York Times. https://www.nytimes.com/2011/11/26/fashion/26iht-ACAW-AUTOMATON26.html. Ανακτήθηκε στις November 25, 2011. «Mechanical curiosities were all the rage in China during the 18th and 19th centuries, as the Qing emperors developed a passion for automaton clocks and pocket watches, and the "Sing Song Merchants", as European watchmakers were called, were more than happy to encourage that interest.»
