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"Trees having an even or quasi even degree sequence are graceful."
Camino Balbuena et al. (2007)
- Camino Balbuena, Pedro García-Vázquez, Xavier Marcote, Juan Carlos Valenzuela:
Trees having an even or quasi even degree sequence are graceful. Appl. Math. Lett. 20(4): 370-375 (2007)
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