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S.I.A.M.
doi.org/10.1137/120864350
SIAM Journal on Discrete Mathematics
Bringing Phylogenetic Networks to Life
Evolutionary Intelligence

Kelk, S., van Iersel, L., Lekic, N., Linz, S., Scornavacca, C., & Stougie, L. (2012). Cycle killer.. qu'est-ce que c'est? On the comparative approximability of hybridization number and directed feedback vertex set. SIAM Journal on Discrete Mathematics, 26(4), 1635–1656. doi:10.1137/120864350