@article {1502,
	title = {Differential ozone sensitivity in an old and a modern Swedish wheat cultivar {\textendash} grain yield and quality, leaf chlorophyll and stomatal conductance.},
	volume = {56},
	year = {2006},
	pages = {63-71},
	author = {Pleijel, H. and Eriksen, A.B. and Danielsson, H. and Bondesson, N. and Sellden, G.}
}
@book {763,
	title = {Growth of Norway spruce (Picea abies) in relation to the AOT40 index.},
	year = {2002},
	type = {Background paper presented at the UNECE Workshop Establishing Ozone Critical Levels II, Goteborg November 2002},
	author = {Skarby, L. and Ottoson, S. and Karlsson, P.E. and Wallin, G. and Sellden, G. and Medin, E. and Pleijel, H.}
}
