@booklet {1418, year = {Submitted}, keywords = {af(st)y, air-pollution, aot40, critical flux versus exposure, exposure indexes, gas-exchange, lettuce, plants, protect vegetation, responses, spring wheat, standard, stomatal conductance, white clover}, author = {Goumenaki, E. and Fernandez, I. G. and Papanikolaou, A. and Papadopoulou, D. and Askianakis, C. and Kouvarakis, G. and Barnes, J.} } @article {1452, title = {Derivation of ozone flux-yield relationships for lettuce: a key horticultural crop.}, journal = {Environmental Pollution}, volume = {146}, year = {2007}, pages = {699-706}, author = {Goumenaki, E. and Fernandez, I. G. and Papanikolaou, A. and Papadopoulou, D. and Askianakis, C. and Kouvarakis, G. and Barnes, J.} }