Hermans, L., Rots, M., Rao, GN., Coussement, R., & Cogneau, M. (1982). Electric-field Gradient and its Temperature-variation At Cd-111 Probe Nuclei in Hafnium Metal. Physical Review. B, Condensed Matter, 25(12), 7474-7481. https://doi.org/10.1103/PhysRevB.25.7474 (Original work published 1982)