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Paper   IPM / M / 101
School of Mathematics
  Title:   A counterexample for Hilton-Johnson's conjecture on list-coloring of graphs
1.  Ch. Eslahchi
2.  H. Hajiabolhassan
3.  M.L. Mehrabadi
4.  R. Tusserkani
  Status:   Published
  Journal: Australas. J. Combin.
  Vol.:  18
  Year:  1998
  Pages:   127-131
  Supported by:  IPM
In this paper a conjecture of A. Hilton and P. Johnson on list coloring of graphs is disproved. By modifying our counterexample, we also answer some other questions concerning Hall numbers.

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