[ESIP-all] Papers may be of interest

[Chaowei Yang]

Dear All, 

There are two sets of free accessible papers that may be of interest to our community.  

1. Attached are 3 invited papers by International Journal of Digital Earth.

2. The following link is to a PNAS special issue organized by Dawn and Shaowen and edited by Dr.Goodchild. 
http://www.pnas.org/cgi/collection/spatial_cyberinfrastructure

Best Regards,
Phil

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