Properties of Ga1-yAlyAs 1-xSbx/GaAs1- xSbx double heterojunction electroluminescent diodes J. Varon, M. C. Boissy et J. Lebailly Rev. Phys. Appl. (Paris), 13 12 (1978) 661-666 DOI: 10.1051/rphysap:019780013012066100