Add JOSS badge and update refs to include doi as suggested

README.md

@@ -4,6 +4,7 @@
 [![.github/workflows/draft-pdf.yml](https://github.com/JGCRI/gcamfaostat/actions/workflows/draft-pdf.yml/badge.svg)](https://github.com/JGCRI/gcamfaostat/actions/workflows/draft-pdf.yml)
 [![R](https://github.com/JGCRI/gcamfaostat/actions/workflows/r.yml/badge.svg)](https://github.com/JGCRI/gcamfaostat/actions/workflows/r.yml)
 [![test_coverage](https://github.com/JGCRI/gcamfaostat/actions/workflows/test_coverage.yml/badge.svg)](https://github.com/JGCRI/gcamfaostat/actions/workflows/test_coverage.yml)
+[![status](https://joss.theoj.org/papers/bf4762e8bef702f36b800e0cb4d478a8/status.svg)](https://joss.theoj.org/papers/bf4762e8bef702f36b800e0cb4d478a8)
 <!-- badges: end -->
 
 ### **`gcamfaostat`**: An R package to prepare, process, and synthesize FAOSTAT data for global agroeconomic and multisector dynamic modeling

vignettes/references.bib

@@ -46,7 +46,7 @@ @incollection{IPCC2022Annex
 	publisher={Cambridge University Press,},
 	address={Cambridge, UK and New York, NY, USA},
 	title={Annex III: Scenarios and modelling methods},
-	url={10.1017/9781009157926.022},
+	doi={10.1017/9781009157926.022},
 	author={IPCC},
 	date=2022,
 	year=2022,
@@ -153,6 +153,7 @@ @article{Zhao2020critical
   title={The critical role of conversion cost and comparative advantage in modeling agricultural land use change},
   author={Zhao, Xin and Calvin, Katherine V and Wise, Marshall A},
   journal={Climate Change Economics},
+  doi={10.1142/s2010007820500049},
   volume={11},
   number={01},
   pages={2050004},
@@ -213,6 +214,7 @@ @article{zhao2021role
   title={The role of global agricultural market integration in multiregional economic modeling: Using hindcast experiments to validate an Armington model},
   author={Zhao, Xin and Calvin, Katherine V and Wise, Marshall A and Iyer, Gokul},
   journal={Economic Analysis and Policy},
+  doi ={10.1016/j.eap.2021.07.007},
   volume={72},
   pages={1--17},
   year={2021},
@@ -326,6 +328,7 @@ @article{vernon2018demeter
   title={Demeter--A Land Use and Land Cover Change Disaggregation Model},
   author={Vernon, Chris R and Le Page, Yannick and Chen, Min and Huang, Maoyi and Calvin, Katherine V and Kraucunas, Ian P and Braun, Caleb J},
   journal={Journal of Open Research Software},
+  doi={10.5334/jors.208},
   volume={6},
   number={PNNL-SA-131044},
   year={2018},