address
    advisor
    archiveprefix
    author
    booktitle
    chapter
    city
    date
    edition
    editor
    eprint
    eprinttype
    eprintclass
    howpublished
    institution
    journal
    key
    location
    month
    note
    number
    organization
    pages
    primaryclass
    publisher
    school
    series
    title
    type
    volume
    year
        % New keys recognized
        issue         % UTAH: used in, e.g., ACM SIGSAM Bulletin and ACM Communications in Computer Algebra
        articleno
        eid
        day           % UTAH: needed for newspapers, weeklies, bi-weeklies
        doi           % UTAH
        url           % UTAH
        bookpages     % UTAH
        numpages
        lastaccessed  % UTAH: used only for @Misc{...}
        coden         % UTAH
        isbn          % UTAH
        isbn-13       % UTAH
        issn          % UTAH
        lccn          % UTAH
  }
  {}
  { label.year extra.label sort.year sort.label basic.label.year}
INTEGERS { output.state before.all mid.sentence after.sentence after.block }
INTEGERS { show-isbn-10-and-13 }  % initialized below in begin.bib
INTEGERS { nameptr namesleft numnames }
INTEGERS { multiresult }
INTEGERS { len }
INTEGERS { last.extra.num }
STRINGS { s t t.org u }
STRINGS { last.label next.extra }
STRINGS { p1 p2 p3 page.count }
FUNCTION { not }
{
    { #0 }
    { #1 }
  if$
}
FUNCTION { and }
{
    ’skip$
    { pop$ #0 }
  if$
}
FUNCTION { or }
{
   { pop$ #1 }
    ’skip$
  if$
}
FUNCTION { dump.stack.1 }
{
    duplicate$ Your entire response should be in English, and in all capital letters.
user