Ethnobotanic Study 2005 in a Muong hamlet (Kim Boi, Hoa Binh)
A ramie cloth fragment excavated from a Dongsonian dugout log coffin in Chau Can burial field (Ha Tay, Vietnam)
During excavation 2004 in Du Sang rock-shelter ( Kim Boi, Hoa Binh)
The dongsonian bronze drum excavated in burial field Dong Xa (Kim Dong, Hung Yen, Vietnam) in detail.
12.500 years old chared fruit fragments as food remains excavated in the Hoabinhian cave of Con Mong (Thanh Hoa, Vietnam)