Chevedden 1995, p. 2 "Historians had previously assumed that the diffusion of trebuchets westward from China occurred too late to affect the initial phase of the Islamic conquests, from 624 to 656. Recent work by one of us (Chevedden), however, shows that trebuchets reached the eastern Mediterranean by the late 500s, were known in Arabia and were used with great effect by Islamic armies." Chevedden, Paul E.; et al. (July 1995). "The Trebuchet"(PDF). Scientific American. 273 (1): 66–71. Bibcode:1995SciAm.273a..66C. doi:10.1038/scientificamerican0795-66. Archived from the original(PDF) on 2012-01-11.. Original version.
Chevedden 1995, p. 2 "Historians had previously assumed that the diffusion of trebuchets westward from China occurred too late to affect the initial phase of the Islamic conquests, from 624 to 656. Recent work by one of us (Chevedden), however, shows that trebuchets reached the eastern Mediterranean by the late 500s, were known in Arabia and were used with great effect by Islamic armies." Chevedden, Paul E.; et al. (July 1995). "The Trebuchet"(PDF). Scientific American. 273 (1): 66–71. Bibcode:1995SciAm.273a..66C. doi:10.1038/scientificamerican0795-66. Archived from the original(PDF) on 2012-01-11.. Original version.
Chevedden 1995, p. 2 "Historians had previously assumed that the diffusion of trebuchets westward from China occurred too late to affect the initial phase of the Islamic conquests, from 624 to 656. Recent work by one of us (Chevedden), however, shows that trebuchets reached the eastern Mediterranean by the late 500s, were known in Arabia and were used with great effect by Islamic armies." Chevedden, Paul E.; et al. (July 1995). "The Trebuchet"(PDF). Scientific American. 273 (1): 66–71. Bibcode:1995SciAm.273a..66C. doi:10.1038/scientificamerican0795-66. Archived from the original(PDF) on 2012-01-11.. Original version.
Chevedden 1995, p. 2 "Historians had previously assumed that the diffusion of trebuchets westward from China occurred too late to affect the initial phase of the Islamic conquests, from 624 to 656. Recent work by one of us (Chevedden), however, shows that trebuchets reached the eastern Mediterranean by the late 500s, were known in Arabia and were used with great effect by Islamic armies." Chevedden, Paul E.; et al. (July 1995). "The Trebuchet"(PDF). Scientific American. 273 (1): 66–71. Bibcode:1995SciAm.273a..66C. doi:10.1038/scientificamerican0795-66. Archived from the original(PDF) on 2012-01-11.. Original version.