Authored:

<bibtex>
    @MISC{ R-HSA-69615.5,
           author          = {Hoffmann, I, Khanna, K},
           title           = {G1/S DNA Damage Checkpoints},
           crossref        = {Reactome:R-HSA-69615.5, DOI:10.3180/REACT_2254.1},
           howpublished    = {\url{http://www.reactome.org/PathwayBrowser/#R-HSA-69615.5}},
           note            = {Reactome Pathway Knowledgebase, http://www.reactome.org/},
           month           = {June},
           year            = {2003},
           }
</bibtex>