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"The L(p, q)-labelling of planar graphs without 4-cycles."
Haiyang Zhu et al. (2014)
- Haiyang Zhu, Lifeng Hou, Wei Chen, Xinzhong Lü:
The L(p, q)-labelling of planar graphs without 4-cycles. Discret. Appl. Math. 162: 355-363 (2014)
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