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"On universal graphs for planar oriented graphs of a given girth."
Oleg V. Borodin et al. (1998)
- Oleg V. Borodin, Alexandr V. Kostochka, Jaroslav Nesetril, André Raspaud, Éric Sopena:
On universal graphs for planar oriented graphs of a given girth. Discret. Math. 188(1-3): 73-85 (1998)
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