Update go-citation-policy.md

_docs/go-citation-policy.md

@@ -17,10 +17,11 @@ We ask that whenever using the GO and/or annotations in a publication, please ci
 
 
 If you used a specific software/analysis tool in your research, in addition to the two publications above, please also cite the tool used according to the following list:
-+ **GO Enrichment Analysis**: Mi H, Huang X, Muruganujan A, Tang H, Mills C, Kang D, Thomas PD. PANTHER version 14: more genomes, a new PANTHER GO-slim and improvements in enrichment analysis tools. Nucleic Acids Res. Jan 2019;47(D1):D419-D426. \[[abstract](https://www.ncbi.nlm.nih.gov/pubmed/30407594){:target="blank"} \| [full text](https://academic.oup.com/nar/article/47/D1/D419/5165346){:target="blank"}\]  
-+ **AmiGO**: Carbon S, Ireland A, Mungall CJ, Shu S, Marshall B, Lewis S, AmiGO Hub, Web Presence Working Group. AmiGO: online access to ontology and annotation data. Bioinformatics. Jan 2009;25(2):288-289. \[[abstract](https://www.ncbi.nlm.nih.gov/pubmed/19033274){:target="blank"} \| [full text](http://bioinformatics.oxfordjournals.org/content/25/2/288.full.pdf+html){:target="blank"}\]  
-+ **OBO-Edit**: Day-Richter J, Harris MA, Haendel M, Gene Ontology OBO-Edit Working Group, Lewis S. OBO-Edit--an ontology editor for biologists. Bioinformatics. Aug 2007;23(16):2198-200. \[[abstract](http://bioinformatics.oxfordjournals.org/content/23/16/2198){:target="blank"} \| [full text](http://bioinformatics.oxfordjournals.org/content/23/16/2198.full){:target="blank"}\]
-
+* **GO Enrichment Analysis**: Mi H, Huang X, Muruganujan A, Tang H, Mills C, Kang D, Thomas PD. PANTHER version 14: more genomes, a new PANTHER GO-slim and improvements in enrichment analysis tools. Nucleic Acids Res. Jan 2019;47(D1):D419-D426. \[[abstract](https://www.ncbi.nlm.nih.gov/pubmed/30407594){:target="blank"} \| [full text](https://academic.oup.com/nar/article/47/D1/D419/5165346){:target="blank"}\]  
+* **AmiGO**: Carbon S, Ireland A, Mungall CJ, Shu S, Marshall B, Lewis S, AmiGO Hub, Web Presence Working Group. AmiGO: online access to ontology and annotation data. Bioinformatics. Jan 2009;25(2):288-289. \[[abstract](https://www.ncbi.nlm.nih.gov/pubmed/19033274){:target="blank"} \| [full text](http://bioinformatics.oxfordjournals.org/content/25/2/288.full.pdf+html){:target="blank"}\]  
+* **OBO-Edit**: Day-Richter J, Harris MA, Haendel M, Gene Ontology OBO-Edit Working Group, Lewis S. OBO-Edit--an ontology editor for biologists. Bioinformatics. Aug 2007;23(16):2198-200. \[[abstract](http://bioinformatics.oxfordjournals.org/content/23/16/2198){:target="blank"} \| [full text](http://bioinformatics.oxfordjournals.org/content/23/16/2198.full){:target="blank"}\]
+* **GO-CAM**: Thomas PD, Hill DP, Mi H, Osumi-Sutherland D, Van Auken K, Carbon S, Balhoff JP, Albou LP, Good B, Gaudet P, Lewis SE, Mungall CJ. Gene Ontology Causal Activity Modeling (GO-CAM) moves beyond GO annotations to structured descriptions of biological functions and systems. Nat Genet. Oct 2019;51(10):1429-1433. \[[abstract](https://pubmed.ncbi.nlm.nih.gov/31548717/){:target="blank"} \| [full text](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7012280/){:target="blank"}\]
+  * Individual models have a stable URI, which is in the format http://model.geneontology.org/6115be0900000600
 
 If you produce tools and/or services that use GO data, the user should be provided with the GO release date and DOI along with the results (e.g. "2019-01-01" and "doi:[10.5281/zenodo.2529950](https://dx.doi.org/10.5281/zenodo.2529950){:target="blank"}").