Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP3015_r118606](http://classic.wikipathways.org/instance/WP3015_r118606) 'UDP-L-arabinose biosynthesis I from UDP-xylose' in Arabidopsis thaliana has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference