DRYZEK, J. Subsurface zone detected in pure nickel by positron annihilation; Hall-Patch effect notification. Tribologia - Finnish Journal of Tribology, [S. l.], v. 40, n. 4, p. 21–28, 2023. DOI: 10.30678/fjt.129221. Disponível em: https://journal.fi/tribologia/article/view/129221. Acesso em: 27 may. 2024.