(October 1967) “The Museum of Music: A History of Mechanical Instruments”, Music Educators Journal54 (2), p. 45–49. doi:10.2307/3391092. 190524140.
(Decembro 2006) “The da Vinci robot”, J. Endourol.20 (12), p. 986–90. doi:10.1089/end.2006.20.986. “... 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.”.
O'Connor, J.J. and E.F. Robertson Heron biography. The MacTutor History of Mathematics archive. Alirita 26a de Septembro 2023 .
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Donald Hill, Mechanical Engineering in the Medieval Near East en gazeto Scientific American, Majo 1991, pp. 64–69. citita en Donald Hill History of Sciences in the Islamic World en IX. Mechanical Engineering, arkivita en [1] la 25an de Decembro 2007.
Donald Hill, Mechanical Engineering in the Medieval Near East en gazeto Scientific American, Majo 1991, pp. 64–69. citita en Donald Hill History of Sciences in the Islamic World en IX. Mechanical Engineering, arkivita en [1] la 25an de Decembro 2007.
