1. ALFEROV , J. I. , ANDREEV , V. M. , KOROLKOV , V. I. , PORTNOI , E. L. , and TRETIAKOV , D. N. , 1968 , Proc. 9tk Int. Conf. Phys. Semiconductors ( Moscow: Izd. Nauka Moscow/Leningrad ), p. 504 .
2. The emission spectra of p-AlxGa1−xAs–n-GaAs heterojunctions