@article{Shivakumar:1988:EBU,
author = {Shivakumar, P. N. and Wong, R.},
title = {Error bounds for a uniform asymptotic expansion of the
{L}egendre function {$P_n^{-m}({\rm cosh} z)$}},
journal = {Quart. Appl. Math.},
fjournal = {Quarterly of Applied Mathematics},
volume = {46},
year = {1988},
number = {3},
pages = {473–488},
issn = {0033-569X},
coden = {QAMAAY},
mrclass = {33A45 (41A60)},
mrnumber = {MR0963583 (89j:33008)},
mrreviewer = {F. W. J. Olver},
zblno = {0655.33004}}