... http://vi.wikipedia.org/wiki/L%E1%BB%8Bch_s%E1%BB%AD_ch%E1%BB%AF_vi%E1%BA%BFt15. http://vietsciences.free.fr/lichsu/lichsuchuviet.htm16. http://my.opera.com/Dragonquest/blog/lich-su-chu -viet- 217. http://www.dactai.net/forums/archive/index.php/t-2979.html24Phụ...