A Practical Approximation Algorithm for Solving Massive Instances of Hybridization Number. - Leo van Iersel; Steven Kelk; Nela Lekic; Céline Scornavacca (WABI, 2012)

Computing nonbinary agreement forests - Leo van Iersel; Steven Kelk; Nela Lekic; Leen Stougie (CoRR, 2012)

Cycle Killer...Qu'est-ce que c'est? On the Comparative Approximability of Hybridization Number and Directed Feedback Vertex Set. - Steven Kelk; Leo van Iersel; Nela Lekic; Simone Linz; Céline Scornavacca; Leen Stougie (SIAM J. Discret. Math., 2012)

A practical approximation algorithm for solving massive instances of hybridization number for binary and nonbinary trees. - Leo van Iersel; Steven Kelk; Nela Lekic; Céline Scornavacca (BMC Bioinform., 2014)

Hybridization Number on Three Trees. - Leo van Iersel; Steven Kelk; Nela Lekic; Chris Whidden; Norbert Zeh (CoRR, 2014)

Approximation Algorithms for Nonbinary Agreement Forests. - Leo van Iersel; Steven Kelk; Nela Lekic; Leen Stougie (SIAM J. Discret. Math., 2014)

On Low Treewidth Graphs and Supertrees. - Alexander Grigoriev; Steven Kelk; Nela Lekic (J. Graph Algorithms Appl., 2015)

Hybridization Number on Three Rooted Binary Trees is EPT. - Leo van Iersel; Steven Kelk; Nela Lekic; Chris Whidden; Norbert Zeh (SIAM J. Discret. Math., 2016)

Satisfying ternary permutation constraints by multiple linear orders or phylogenetic trees. - Leo van Iersel; Steven Kelk; Nela Lekic; Simone Linz (Theor. Comput. Sci., 2016)