A charming class of perfectly orderable graphs. Hoàng, C. T., Maffray, F., Olariu, S., & Preissmann, M. Discrete Mathematics, 102(1):67-74, 1992.
A charming class of perfectly orderable graphs [link]Link  bibtex   
@article{ DBLP:journals/dm/HoangMOP92,
  author    = {Ch\ính T. Hoàng and Frédéric Maffray and Stephan Olariu and Myriam Preissmann},
  title     = {A charming class of perfectly orderable graphs},
  journal   = {Discrete Mathematics},
  pages   = {67-74},
  volume   = {102},
  number   = {1},
  ee   = {http://dx.doi.org/10.1016/0012-365X(92)90348-J} ,
  year   = {1992}
}

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