Here are some papers available on-line (see here for journals and publication dates).

Not yet published:

Proof of the Kalai-Meshulam conjecture (with Maria Chudnovsky, Alex Scott and Sophie Spirkl).

A survey of chi-boundedness (with Alex Scott).

Sparse graphs with no polynomial-sized anticomplete pairs (with Maria Chudnovsky, Jacob Fox, Alex Scott and Sophie Spirkl).

Trees and linear anticomplete pairs (with Maria Chudnovsky, Alex Scott and Sophie Spirkl).

Towards Erdos-Hajnal for graphs with no 5-hole (with Maria Chudnovsky, Jacob Fox, Alex Scott and Sophie Spirkl).

Sparse graphs without linear anticomplete pairs (with Maria Chudnovsky, Alex Scott and Sophie Spirkl).

Caterpillars in Erdos-Hajnal (with Anita Liebenau, Marcin Pilipczuk and Sophie Spirkl).

Clustered colouring in minor-closed classes (with Sergey Norin, Alex Scott and David Wood).

Bad news for chordal partitions (with Alex Scott and David Wood).

Triangle-free graphs with no six-vertex induced path (with Maria Chudnovsky, Sophie Spirkl, Mingxian Zhong).

Near-domination in graphs (with Bruce Reed, Alex Scott).

Induced subgraphs of graphs with large chromatic number. XIII. New brooms (with Alex Scott).

Induced subgraphs of graphs with large chromatic number. XII. Distant stars (with Maria Chudnovsky, Alex Scott).

Induced subgraphs of graphs with large chromatic number. XI. Orientations (with Maria Chudnovsky, Alex Scott).

Induced subgraphs of graphs with large chromatic number. X. Holes with specific residue (with Alex Scott).

Induced subgraphs of graphs with large chromatic number. VIII. Long odd holes (with Maria Chudnovsky, Alex Scott, Sophie Spirkl).

Induced subgraphs of graphs with large chromatic number. VII. Gyarfas' complementation conjecture (with Alex Scott).

Induced subgraphs of graphs with large chromatic number. VI. Banana trees (with Alex Scott)

Induced subgraphs of graphs with large chromatic number. V. Chandeliers and strings (with Maria Chudnovsky, Alex Scott).

Majority colourings of digraphs (with Stephan Kreutzer, Sang-il Oum, Dominic van der Zypen, David Wood).

Cut coloring and circuit covering (with Matt Devos, Thor Johnson).

Excluded minors in cubic graphs (with Neil Robertson, Robin Thomas).

Girth six cubic graphs have Petersen minors (with Neil Robertson, Robin Thomas).

Disjoint paths in unions of tournaments (with Maria Chudnovsky, Alex Scott).

Domination in tournaments (with Maria Chudnovsky, Ringi Kim, Chun-Hung Liu, Stephan Thomasse).

Large rainbow matchings in general graphs (with Ron Aharoni, Eli Berger, Maria Chudnovsky, David Howard).

A bound on the excluded minors for a surface

Published in 2018:

Induced subgraphs of graphs with large chromatic number. IV. Consecutive holes (with Alex Scott).

Even pairs and prisms corners in Berge graphs (with Maria Chudnovsky, Frederic Maffray, Sophie Spirkl).

Published in 2017:

Induced subgraphs of graphs with large chromatic number. III. Long holes (with Maria Chudnovsky, Alex Scott).

Induced subgraphs of graphs with large chromatic number. IX. Rainbow paths (with Alex Scott).

Rooted grid minors (with Daniel Marx, Paul Wollan).

Colouring perfect graphs with bounded clique number (with Maria Chudnovsky, Aurelie Lagoutte, Sophie Spirkl).

Cyclically five-connected cubic graphs (with Neil Robertson, Robin Thomas).

Published in 2016:

Immersion in four-edge-connected graphs (with Maria Chudnovsky, Zdenek Dvorak, Tereza Klimosova).

Bipartite minors (with Maria Chudnovsky, Gil Kalai, Eran Nevo, Isabella Novik).

Tree-chromatic number

Three-edge-colouring doublecross cubic graphs (with Katherine Edwards, Daniel Sanders, Robin Thomas).

Unavoidable induced subgraphs in large graphs with no homogeneous sets (with Maria Chudnovsky, Ringi Kim, Sang-Il Oum).

Induced subgraphs of graphs with large chromatic number. II. Three steps towards Gyarfas' conjectures (with Maria Chudnovsky, Alex Scott).

Disjoint dijoins (with Maria Chudnovsky, Katherine Edwards, Ringi Kim, Alex Scott).

Hadwiger's conjecture.

Induced subgraphs of graphs with large chromatic number. I. Odd holes (with Alex Scott).

Published in 2015:

Disjoint paths in tournaments (with Maria Chudnovsky, Alex Scott).

Edge-disjoint paths in digraphs with bounded independence number (with Alexandra Fradkin).

Criticality for multicommodity flows.

Tree-width and planar minors (with Alexander Leaf).

Tournament minors (with Ilhee Kim).

Excluding a substar and an antisubstar (with Maria Chudnovsky, Sergey Norin, Bruce Reed).

Wheel-free planar graphs (with Pierre Aboulker, Maria Chudnovsky, Nicolas Trotignon).

Edge-colouring eight-regular planar graphs (with Maria Chudnovsky, Katherine Edwards).

Edge-colouring seven-regular planar graphs (with Maria Chudnovsky, Katherine Edwards, Ken-ichi Kawarabayashi).

Excluding paths and antipaths (with Maria Chudnovsky).

A relative of Hadwiger's conjecture (with Katherine Edwards, Dong Yeap Kang, Jaehoon Kim, Sang-Il Oum).

Published in 2014:

Proof of a conjecture of Bowlin and Brin on four-colouring triangulations.

Rao's degree sequence conjecture (with Maria Chudnovsky).

Extending the Gyarfas-Sumner conjecture (with Maria Chudnovsky).

Excluding pairs of graphs (with Maria Chudnovsky, Alex Scott).

Tournaments with near-linear transitive subsets (with Krzysztof Choromanski, Maria Chudnovsky).

Published in 2013:

Tournaments and colouring (with E. Berger, K. Choromanski, M. Chudnovsky, J. Fox, M. Loebl, A. Scott, S. Thomasse).

A counterexample to a conjecture of Schwartz (with F. Brandt, M. Chudnovsky, I. Kim, G. Liu, S. Norin, A. Scott, S. Thomasse).

Tournament path-width and topological containment (with Alexandra Fradkin).

A local strengthening of Reed's omega, Delta, and chi conjecture for quasi-line graphs (with M. Chudnovsky, A. King, M. Plumettaz).

Detecting an induced net subdivision (with Maria Chudnovsky, Nicolas Trotignon).

Published in 2012:

Graph minors. XXII. Irrelevant vertices in linkage problems (with Neil Robertson).

Claw-free graphs VII. Quasi-line graphs (with Maria Chudnovsky).

Perfect matchings in planar cubic graphs (with Maria Chudnovsky).

Packing seagulls (with Maria Chudnovsky).

Finding minimum clique capacity (with Maria Chudnovsky and Sang-Il Oum).

Tournament immersion and cutwidth (with Maria Chudnovsky and Alexandra Fradkin).

Growing without cloning (with Maria Chudnovsky).

Three-colourable perfect graphs without even pairs (with Maria Chudnovsky).

Published in 2011:

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

A well-quasi-order for tournaments (with Maria Chudnovsky).

Published in 2010:

Graph minors. XXIII. Nash-Williams' immersion conjecture (with Neil Robertson).

Claw-free graphs VI. Colouring (with Maria Chudnovsky).

The three-in-a-tree problem (with Maria Chudnovsky).

K_4-free graphs with no odd holes (with Maria Chudnovsky, Neil Robertson and Robin Thomas).

Counting paths in digraphs (with Blair Sullivan).

Published in 2009:

Graph minors. XXI. Graphs with unique linkages (with Neil Robertson).

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

Even pairs in Berge graphs (with Maria Chudnovsky).

Published in 2008:

Claw-free graphs II. Non-orientable prismatic graphs (with Maria Chudnovsky).

Claw-free graphs III. Circular interval graphs (with Maria Chudnovsky).

Claw-free graphs IV. Decomposition theorem (with Maria Chudnovsky).

Claw-free graphs V. Global structure (with Maria Chudnovsky).

Cycles in dense digraphs (with Maria Chudnovsky, Blair Sullivan).

Solution of three problems of Cornuejols (with Maria Chudnovsky).

Bisimplicial vertices in even-hole-free graphs (with L.Addario-Berry, M.Chudnovsky, F.Havet, B.Reed).

Published in 2007:

The roots of the independence polynomial of a claw-free graph (with Maria Chudnovsky).

Claw-free graphs I. Orientable prismatic graphs (with Maria Chudnovsky).

Excluding induced subgraphs (with Maria Chudnovsky).

Testing branchwidth (with Sang-Il Oum). See also a Corrigendum.

Published in 2006:

The strong perfect graph theorem (with M. Chudnovsky, N. Robertson, R. Thomas).

How the proof of the strong perfect graph conjecture was found.

Approximating clique-width and branch-width (with Sang-Il Oum).

Proper minor-closed families are small (with Serguei Norine, Robin Thomas and Paul Wollan).

Certifying large branch-width (with Sang-Il Oum).

Packing non-zero A-paths in group-labeled graphs (with M. Chudnovsky, J. Geelen, A. Gerards, L. Goddyn, M. Lohman).

Published in 2005:

Recognizing Berge graphs (with M. Chudnovsky, G. Cornuejols, X. Liu, K. Vuskovic).

Detecting even holes (with Maria Chudnovsky and Ken-ichi Kawarabayashi).

The structure of claw-free graphs (with Maria Chudnovsky).

Published in 2004:

Graph minors. XX. Wagner's conjecture (with Neil Robertson).

Hadwiger's conjecture for line graphs (with Bruce Reed).