Trịnh S., and Nguyễn Sỹ T. “Dong Son Bronze Drums - a Proof of Cultural Exchange Between Dong Son and Other Cultures in Southeast Asia”. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, vol. 3, no. 5, Dec. 2020, pp. 53-60, doi:10.51453/2354-1431/2017/131.