@Article{KILSS2012,
AUTHOR = {Kelk, Steven and van Iersel, Leo and Lekic, Nela and Linz, Simone and Scornavacca, Celine and Stougie, Leen},
TITLE = {Cycle killer... qu'est-ce que c'est? On the comparative approximability of hybridization number and directed feedback vertex set},
YEAR = {2012},
JOURNAL = {SIDMA},
VOLUME = {26},
NUMBER = {4},
PAGES = {1635-1656},
URL = {http://dx.doi.org/10.1137/120864350},
NOTE = {http://arxiv.org/abs/1112.5359, about the title},
KEYWORDS = {agreement forest, approximation, explicit network, from rooted trees, minimum number, phylogenetic network, phylogeny, Program CycleKiller, reconstruction} }
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