Steven Kelk, Leo van Iersel, Nela Lekic, Simone Linz, Celine Scornavacca, Leen Stougie. Cycle Killer...Qu'est-ce que c'est? On the Comparative Approximability of Hybridization Number and Directed Feedback Vertex Set. SIAM J. Discrete Math., 26(4):1635-1656, 2012. [doi]
@article{KelkILLSS12,
title = {Cycle Killer...Qu'est-ce que c'est? On the Comparative Approximability of Hybridization Number and Directed Feedback Vertex Set},
author = {Steven Kelk and Leo van Iersel and Nela Lekic and Simone Linz and Celine Scornavacca and Leen Stougie},
year = {2012},
doi = {10.1137/120864350},
url = {http://dx.doi.org/10.1137/120864350},
researchr = {https://researchr.org/publication/KelkILLSS12},
cites = {0},
citedby = {0},
journal = {SIAM J. Discrete Math.},
volume = {26},
number = {4},
pages = {1635-1656},
}