Resonant inelastic x-ray scattering in electronically quasi-zero- dimensional CuB2 O4 - J.N. Hancock; G. Chabot-Couture; Y. Li; G.A. Petrakovskiǐ; K. Ishii; I. Jarrige; J. Mizuki; T.P. Devereaux; M. Greven (Physical Review B - Condensed Matter and Materials Physics, 2009)