Timofeev, V. B., Larionov, A. V., Ioselevitch, A. S., Zeman, J., Martinez, G., Hvam, J. M., & Sörensen, C. B. (1998). Interwell radiative recombination in the presence of random potential fluctuations in GaAs/AlGaAs biased double quantum wells. JETP Letters, 67, 613-616.