Lateral photoconductivity of Ge/Si heterostructures with Ge quantum dots S. V. Kondratenko, A. S. Nikolenko, O. V. Vakulenko, S. L. Golovinskiy, Yu. N. Kozyrev, M. Yu. Rubezhanskaya and A. I. Vodyanitsky Semiconductors, 2007, Volume 41, Number 8, 09350938