@article {35628,
	title = {Sulfur-isotope anomaly associated with the Frasnian-Famennian extinction, Medicine Lake, Alberta, Canada},
	volume = {15},
	year = {1987},
	pages = {393-396},
	publisher = {Geology},
	author = {Geldsetzer, H. H. J. and Goodfellow, W. D. and McLaren, D. J. and Oechard, M. J.}
}
