Optical functions of InGaP/GaAs epitaxial layers from 0.01 to 5.5 eVR. Ferrini, G. Guizzetti, M. Patrini, A. Parisini, L. Tarricone and B. ValentiEur. Phys. J. B, 27 4 (2002) 449-458DOI: https://doi.org/10.1140/epjb/e2002-00177-x