Rank and chromatic number of a graph. - Andrei Kotlov (J. Graph Theory, 1997)

Spectral Characterization of Tree-Width-Two Graphs. - Andrei Kotlov (Comb., 2000)

Bulky Subgraphs of the Hypercube. - Andrei Kotlov (Eur. J. Comb., 2000)

Tree width and regular triangulations. - Andrei Kotlov (Discret. Math., 2001)

Minors and Strong Products. - Andrei Kotlov (Eur. J. Comb., 2001)

Triangulated Spheres and Colored Cliques. - Ron Aharoni; Maria Chudnovsky; Andrei Kotlov (Discret. Comput. Geom., 2002)

Rank, term rank, and chromatic number. - Donniell E. Fishkind; Andrei Kotlov (Discret. Math., 2002)

Matchings and Hadwiger's Conjecture. - Andrei Kotlov (Discret. Math., 2002)