@article {563,
	title = {Air pollution fades the plumage of the Great Tit},
	journal = {Functional Ecology},
	volume = {12},
	year = {1998},
	pages = {607-612},
	author = {Eeva, T. and Lehikoinen E. and Rvnkd, M.}
}
@article {560,
	title = {Local survival rates of the pied flycatchers (Ficedula hypoleuca) and the great tits (Parus major) in an air pollution gradient},
	journal = {Ecosciences},
	volume = {5},
	year = {1998},
	pages = {46-50},
	author = {Eeva, T. and Lehikoinen E.}
}
@article {561,
	title = {Pollution - Recovery of breeding success in wild birds. },
	journal = {Nature},
	volume = {403},
	year = {1998},
	pages = {851-852},
	author = {Eeva, T. and Lehikoinen E.}
}
@article {562,
	title = {Pollution-related variation in food supply and breeding success in two hole-nesting passerines.},
	journal = {Ecology},
	volume = {78},
	year = {1997},
	pages = {1120-1131},
	author = {Eeva, T. and Lehikoinen E. and Pohjalainen, T.}
}
