def get_pub_type(poa_article):
    """
    Given an article object, determine whether the pub_type is for
    PoA article or VoR article
    """
    pub_type = None
    if poa_article.is_poa is True:
        # PoA
        pub_type = "aheadofprint"
    else:
        # VoR
        pub_type = "epublish"
    return pub_type