... tieng Hdn vdo tieng Viet, trong Nghien citu vd dgy hgc lieng Hdn (Ki yS'u Hpi thao khoa hpc qud'c te), 2006, U.263-281. 6. F$ia^: {^m^^^it^my, x ^#r: Ji^lr^hif #lf it ... doan nay, hai dai ttr nhan xung ngdi thiir hai iy- va -k hoan toan mang y nghla trung tfnh. Khoang 200 nam sau, vao nhiing nam 400 - 500 TCN (thdi Khong Tu, Ludn ngii) bat ddu co sir phan...