arkL reference update form for: Xu et al. 2012

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Authors:		Title Case lose numbers initialise rotate semi-colon
		Xu, B. ; Gu, Z. Y. ; Wang, C. Y. ; Hao, Q. Z. ; Han, J. T. ; Liu, Q. ; et al.
Year:
Title:		Carbon isotopic evidence for the association of decreasing atmospheric CO2 level with the Frasnian-Famennian mass extinction.
Journal:		jid: 672
Series:
Volume:		[cover year]	Part/chapter/article number:
First Page:		1	Last Page:	2
Language:			PDF Quality:	good-publishers good-scan good-BHL OK- scan, needs trimming OK - scan publishers but poor figures poor scan proof copy online early text not copyable
		PDF Access: