code: async def _download_lsst_bibtex(bibtex_names):
      
      blob_url_template = (
          'https://raw.githubusercontent.com/lsst/lsst-texmf/master/texmf/'
          'bibtex/bib/{name}.bib'
      )
      urls = [blob_url_template.format(name=name) for name in bibtex_names]
  
      tasks = []
      async with ClientSession() as session:
          for url in urls:
              task = asyncio.ensure_future(_download_text(url, session))
              tasks.append(task)
  
          return await asyncio.gather(*tasks)
docs: Asynchronously download a set of lsst-texmf BibTeX bibliographies from
      GitHub.
  
      Parameters
      ----------
      bibtex_names : sequence of `str`
          Names of lsst-texmf BibTeX files to download. For example:
  
          .. code-block:: python
  
             ['lsst', 'lsst-dm', 'refs', 'books', 'refs_ads']
  
      Returns
      -------
      bibtexs : `list` of `str`
          List of BibTeX file content, in the same order as ``bibtex_names``.