Tel: 519-888-4567, ext. 35595
- Extremal combinatorics
- Graph theory
- "A note on vertex list-colouring", Combinatorics, Probability and Computing, to appear.
- "Ramsey numbers for trees of small maximum degree", Combinatorica, to appear, with T. Luczak and P.W. Tingley.
- "Integer and fractional packings in dense graphs", Combinatorica, to appear, with V. Rodl.