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"Finding a homotopy base for directed paths in an acyclic graph."
Kazuo Murota, Satoru Fujishige (1987)
- Kazuo Murota, Satoru Fujishige:
Finding a homotopy base for directed paths in an acyclic graph. Discret. Appl. Math. 17(1-2): 157-162 (1987)
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