@article {38920,
	title = {Microspherules in Devonian sediments : origins, geological significance, and contamination problems},
	volume = {30},
	year = {1993},
	pages = {1660-1667},
	publisher = {Canadian Journal of Earth Sciences},
	url = {https://article.pubs.nrc-cnrc.gc.ca/RPAS/rpv?hm=HInit\&journal=cjes\&volume=30\&afpf=e93-144.pdf\&media=pdf\&calyLang=eng},
	author = {Wang, K. and Chatterton, B. D. E.}
}
