@inproceedings{Davison1977,
  author    = {{J. Leslie Davison}},
  title     = {{Some Comments on an Iteration Problem}},
  booktitle = {{Proc. 6-th Manitoba Conf. On Numerical Mathematics, and Computing (Univ. of Manitoba-Winnipeg 1976), Congressus Numerantium XVIII}},
  publisher = {{Utilitas Math.}},
  year      = {{1977}},
  pages     = {{55--59}},
  note      = {{MR 58 #31773}},
}