Authored:

<bibtex>
    @MISC{ R-OSA-5633340.1,
           author          = {Amarasinghe, Vindhya},
           title           = {Citrulline-nitric oxide cycle},
           crossref        = {Reactome:R-OSA-5633340.1},
           howpublished    = {\url{http://www.reactome.org/PathwayBrowser/#R-OSA-5633340.1}},
           note            = {Reactome Pathway Knowledgebase, http://www.reactome.org/},
           month           = {September},
           year            = {2014},
           }
</bibtex>