Quantum-state tomography for quadrupole nuclei and its application on a two-qubit system - Bonk, Fábio Aurélio; Sarthour, R. S.; Azevêdo, Eduardo Ribeiro de; Bulnes, J. D.; Mantovani, G. L.; Freitas, J. C. C.; Bonagamba, Tito José; Guimarães, A. P.; Oliveira, I. S. (Physical Review A, 2004)