The strong perfect graph theorem (with M. Chudnovsky, N. Robertson, R. Thomas), Annals of Math., 164 (2006), 51-229. (.pdf version )

Recognizing Berge graphs (with M. Chudnovsky, G. Cornuejols, X. Liu, K. Vuskovic), Combinatorica, 25 (2005), 143-186. (.pdf version )

The roots of the independence polynomial of a claw-free graph (with Maria Chudnovsky), J. Combinatorial Theory. Ser B, 97 (2007), 350-357. (.pdf version )

Graph minors. XX. Wagner's conjecture (with Neil Robertson), J. Combinatorial Theory, Ser. B, 92 (2004), 325-357. (.pdf version )

Graph minors. XXI. Graphs with unique linkages (with Neil Robertson), submitted for publication. (.pdf version )

Graph minors. XXII. Irrelevant vertices in linkage problems (with Neil Robertson), submitted for publication. (.pdf version )

Graph minors. XXIII. Nash-Williams' immersion conjecture (with Neil Robertson), submitted for publication. (.pdf version )

Claw-free graphs I. Orientable prismatic graphs (with Maria Chudnovsky), J. Combinatorial Theory, Ser. B, 97 (2007), 867--903. (.pdf version )

Claw-free graphs II. Non-orientable prismatic graphs (with Maria Chudnovsky), J. Combinatorial Theory, Ser. B, 98 (2008), 249--290. (.pdf version )

Claw-free graphs III. Circular interval graphs (with Maria Chudnovsky), submitted for publication. (.pdf version )

Claw-free graphs IV. Decomposition theorem (with Maria Chudnovsky), J. Combinatorial Theory, Ser. B, to appear. (.pdf version )

Claw-free graphs V. Global structure (with Maria Chudnovsky), submitted for publication. (.pdf version )

Detecting even holes (with Maria Chudnovsky and Ken-ichi Kawarabayashi), J. Graph Theory, 48 (2005), 85-111. (.pdf version )

How the proof of the strong perfect graph conjecture was found, Gazette des Mathematiciens 109 (2006), 69-83. (.pdf version )

The structure of claw-free graphs (with Maria Chudnovsky), Surveys in Combinatorics, 2005, (Proceedings of the 20th British Combinatorial Conference, Durham, 2005, B.S. Webb, ed.), London. Math. Soc. Lecture Notes 327, 153--171. (.pdf version )

Hadwiger's conjecture for line graphs (with Bruce Reed), European J. Combinatorics, 25 (2004), 873-876. (.pdf version )

Approximating clique-width and branch-width (with Sang-Il Oum), J. Combinatorial Theory, Ser. B, 96 (2006), 514-528. (.pdf version )

Proper minor-closed families are small (with Serguei Norine, Robin Thomas and Paul Wollan), J. Combinatorial Theory, Ser. B, 96 (2006), 754-757. (.pdf version )

Certifying large branch-width (with Sang-Il Oum), to appear in SODA. (.pdf version )

On the odd-minor variant of Hadwiger's conjecture (with Jim Geelen, Bert Gerards, Bruce Reed, Adrian Vetta), submitted for publication. (.pdf version )

The three-in-a-tree problem (with Maria Chudnovsky), submitted for publication. (.pdf version )

Cycles in dense digraphs (with Maria Chudnovsky, Blair Sullivan), submitted for publication. (.pdf version )

Cut coloring and circuit covering (with Matt Devos, Thor Johnson), submitted for publication. (.pdf version )

Solution of three problems of Cornuejols (with Maria Chudnovsky), J. Combinatorial Theory, Ser. B, to appear. (.pdf version )

Excluding induced subgraphs (with Maria Chudnovsky), to appear in Surveys in Combinatorics, 2007, (Proceedings of the 21st British Combinatorial Conference, Reading, 2007). (.pdf version )

Even pairs in Berge graphs (with Maria Chudnovsky), submitted for publication. (.pdf version )

Perfect matchings in planar cubic graphs (with Maria Chudnovsky), submitted for publication. (.pdf version )

The edge-density for K_{2,t} minors (with Maria Chudnovsky and Bruce Reed), submitted for publication. (.pdf version )

K_4-free graphs with no odd holes (with Maria Chudnovsky, Neil Robertson and Robin Thomas), submitted for publication. (.pdf version )