URLDate
Verified		Extra Software
Requirements
(if any)		Access
Conditions		Notes
http://www.jstor.org/stable/pdf/30245178.pdf11/08/2017PDF ReaderItem is within a limited-access website
http://www.annualreviews.org/doi/full/10.1146/annu[...]11/08/2017Item is within a limited-access website
http://www.annualreviews.org/doi/pdf/10.1146/annur[...]11/08/2017PDF ReaderItem is within a limited-access website