@article {34824,
	title = {The effect of sulphur dioxide on net CO2 assimilation in the lichen Evernia mesomorpha Nyl. },
	volume = {100},
	year = {1985},
	pages = {643-651},
	publisher = {New Phytologist},
	url = {http://www.jstor.org/stable/2557716?seq=1},
	author = {Huebert, D. B. and L{\textquoteright} Hirondelle, S. J. and Addison, P. A.}
}
