INTERFACE RELATED EMISSION FROM AN MBE-GROWN (Al, Ga) As HETEROSTRUCTURE L.W. MOLENKAMP, G.W. 't HOOFT, W.A.J.A. van der POEL et C.T. FOXON J. Phys. Colloques, 48 C5 (1987) C5-127-C5-130 DOI: 10.1051/jphyscol:1987523