http://www.gisdevelopment.net/aars/acrs/1992/ps1/ps006.asp 7 Eylül 2008 tarihinde Wayback Machine sitesinde arşivlendi. LIU Shuren YU Guopei, A Remote – Sensing study on the distribution pattern of ancient. Platform – like ruins and earth-mounded graves of TH WU colture in southern Jiangsu, China and its relation. ship with palaegeographical evolution Proceedings of the Asian Conference on Remote Sensing, 1992
http://www.gisdevelopment.net/aars/acrs/1992/ps1/ps006.asp 7 Eylül 2008 tarihinde Wayback Machine sitesinde arşivlendi. LIU Shuren YU Guopei, A Remote – Sensing study on the distribution pattern of ancient. Platform – like ruins and earth-mounded graves of TH WU colture in southern Jiangsu, China and its relation. ship with palaegeographical evolution Proceedings of the Asian Conference on Remote Sensing, 1992