def issn(self): # 2016-11-28 TD : for all @type values (web, print, and subsyear) there seems # to be always both the online EISSN and the print ISSN available return xutil.xp_texts(self.xml, "//published[@type='web']/journalref/issn")
def keywords(self): return xutil.xp_texts(self.xml, "//keywordList/keyword")
def emails(self): return xutil.xp_texts(self.xml, "//email")
def keywords(self): return xutil.xp_texts(self.xml, "//art-front/keyword")
def categories(self): return xutil.xp_texts(self.xml, "//art-front/subject")
def issn(self): return xutil.xp_texts(self.xml, "//journal-meta/issn")
def keywords(self): return xutil.xp_texts(self.xml, "//kwd-group/kwd")
def categories(self): return xutil.xp_texts(self.xml, "//article-categories/subj-group/subject")
def mesh_descriptors(self): return xutil.xp_texts(self.xml, "//meshHeadingList/meshHeading/descriptorName")