Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP540_r117042](http://classic.wikipathways.org/instance/WP540_r117042) 'Cytoplasmic ribosomal proteins' in Caenorhabditis elegans has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference