Gerasopoulos E., Kazadzis S., Vrekoussis M., Kouvarakis G., Liakakou E., Kouremeti N., Giannadaki D., Kanakidou M., Bohn B., and Mihalopoulos N.: Factors affecting O3 and NO2 photolysis frequencies measured in the eastern Mediterranean during the five year period 2002-2006, Journal of Geophysical Research Vol 117(22) Doi: 10.1029/2012JD017622, 2012