Kernel(s) for problems with no kernel: On out-trees with many leaves
Binkele-Raible, Daniel ; Fernau, Henning ; Fomin, Fedor ; Lokshtanov, Daniel ; Saurabh, Saket ; Villanger, Yngve
ACM transactions on algorithms, 2012-09, Vol.8 (4), p.1-19 [Periódico revisado por pares]ACM
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