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"Crown graphs and subdivision of ladders are odd graceful."
E. M. Badr, M. I. Moussa, K. Kathiresan (2011)
- E. M. Badr, M. I. Moussa, K. Kathiresan:
Crown graphs and subdivision of ladders are odd graceful. Int. J. Comput. Math. 88(17): 3570-3576 (2011)
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