@online{vtpchap4,
    ALTauthor = {Hector Camba Lainez},
    ALTeditor = {editor},
    title = {Cap4 implementing vtp},
    date = {Jun 25, 2010},
    url = {https://www.slideshare.net/lucky0679/cap4-implementing-vtp},
    OPTsubtitle = {subtitle},
    OPTtitleaddon = {titleaddon},
    OPTlanguage = {language},
    OPTversion = {version},
    OPTnote = {note},
    OPTorganization = {organization},
    OPTdate = {22},
    OPTmonth = {05},
    OPTyear = {2017},
    OPTaddendum = {addendum},
    OPTpubstate = {pubstate},
    OPTurldate = {2017-05-22},
}