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"On Planar Perfectly Contractile Graphs."
Cláudia Linhares Sales, Frédéric Maffray, Bruce A. Reed (1997)
- Cláudia Linhares Sales, Frédéric Maffray, Bruce A. Reed:
On Planar Perfectly Contractile Graphs. Graphs Comb. 13(2): 167-187 (1997)
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