@article {40605,
	title = {Prospects and limitations of an isotope tracer technique for understanding sulfur cycling in forested and agro-ecosystems},
	volume = {32},
	year = {1996},
	pages = {191-201},
	publisher = {Isotopes in Environmental and Health Studies},
	url = {http://sciencelinks.jp/j-east/article/200417/000020041704A0631007.php},
	author = {Mayer, B. and Krouse, H. R.}
}
