Reviewed:

<bibtex>
    @MISC{ R-HSA-445355.8,
           author          = {Rush, MG},
           title           = {Smooth Muscle Contraction},
           crossref        = {Reactome:R-HSA-445355.8},
           howpublished    = {\url{http://www.reactome.org/PathwayBrowser/#R-HSA-445355.8}},
           note            = {Reactome Pathway Knowledgebase, http://www.reactome.org/},
           month           = {January},
           year            = {2008},
           }
</bibtex>