M.  De Luca, Lavenuta, G., Polimeni, A., Rubini, S., Grillo, V., Mura, F., Miriametro, A., Capizzi, M., and Martelli, F., ?Excitonic recombination and absorption in InxGa1-xAs/GaAs heterostructure nanowires?, Physical Review B, vol. 87, p. 235304, 2013.