@article {1642, title = {Secondary effects of air pollution: Enhanced aphid growth.}, journal = { Environmental Pollution Series A, Ecological and Biological}, volume = {39}, year = {1985}, pages = {227-234}, author = {Dohmen, G.P.} } @article {552, title = {Air pollution increases Aphis fabae pest potential}, journal = {Nature}, volume = {307}, year = {1984}, pages = {52-53}, author = {Dohmen, G.P. and McNeill, S. and Bell, J.N.B.} }