DAO, Nguyen Van. Dynamic absorber for drilling instrument. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 11, n. 1, p. 14–18, 1989. DOI: 10.15625/0866-7136/10292. Disponível em: https://vjmech.vast.vn/vjmech/article/view/10292. Acesso em: 9 nov. 2025.