Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP36_r124941](http://classic.wikipathways.org/instance/WP36_r124941) 'De novo biosynthesis of pyrimidine deoxyribonucleotides' in Saccharomyces cerevisiae has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference