@article{walker:2003:ajf,
    author = {Walker, Peter L.},
     title = {The analyticity of {J}acobian functions with respect to the
              parameter {$k$}},
   journal = {Proc. Roy. Soc. London Ser A},
  fjournal = {The Royal Society of London. Proceedings. Series A.
              Mathematical, Physical and Engineering Sciences},
    volume = {459},
      year = {2003},
     pages = {2569–2574},
      issn = {1364-5021},
   mrclass = {33E05},
  mrnumber = {MR2011355 (2004j:33030)},
       doi = {10.1098/rspa.2003.1157},
     zblno = {1052.33018}}