Bruneval, F. ., Vast, N. ., Reining, L. ., Izquierdo, M. ., Sirotti, F. ., & Barrett, N. . (2006). Exchange and correlation effects in electronic excitations of Cu2O. Phys. Rev. Lett., 97, 267601. https://doi.org/10.1103/PhysRevLett.97.267601 (Original work published)