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"On greene's theorem for digraphs."
Irith Ben-Arroyo Hartman, Fathi Saleh, Daniel Hershkowitz (1994)
- Irith Ben-Arroyo Hartman, Fathi Saleh, Daniel Hershkowitz:
On greene's theorem for digraphs. J. Graph Theory 18(2): 169-175 (1994)
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