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WikiPedia: Bản_thảo_Bakhshali http://cincinnatitemple.com/articles/Bakhshali-Man... http://www.theguardian.com/science/2017/sep/14/muc... http://crd-legacy.lbl.gov/~dhbailey/dhbtalks/dhb-i... http://www.new.dli.ernet.in/rawdataupload/upload/i... http://projecteuclid.org/euclid.bams/1183493367 //www.worldcat.org/issn/0261-3077 http://www.arch.ox.ac.uk/reader/items/oxford-radio... http://www.bodleian.ox.ac.uk/bodley/news/2017/sep-... http://www-history.mcs.st-andrews.ac.uk/HistTopics... http://www-history.mcs.st-andrews.ac.uk/~history/M...