@ctan{ltablex,
  Title          = {The \texttt{ltablex} package},
  Author         = {Anil Goel},
  url         = {/macros/latex/contrib/ltablex/},
  version           = {1.1},
  date           = {2014-08-13},
}

@ctan{tabularx,
  Title          = {The \texttt{tabularx} package},
  Author         = {David Carlisle},
  url         = {/macros/latex/contrib/carlisle/},
  version           = {2.11},
  date           = {2016-02-03},
}

@ctan{Pak-longtable,
  Title          = {The \texttt{longtable} package},
  Author         = {David Carlisle},
  url	 = {/macros/latex/required/tools/longtable.pdf},
  date           = {2014-10-28},
  version = {4.11},
}