An Ehrenfeucht-Fraïssé game approach to collapse results in database theory Fulltext Access 69 Pages 2007
Corrigendum to “On 2-arc-transitivity of Cayley graphs” [J. Combin. Theory Ser. B 87 (2003) 162-196] Fulltext Access 4 Pages 2006
On NP-hardness of the clique partition—Independence number gap recognition and related problems Fulltext Access 4 Pages 2006
On trees with a maximum proper partial 0–1 coloring containing a maximum matching Fulltext Access 4 Pages 2006
An ss-strong tournament with s⩾3s⩾3 has s+1s+1 vertices whose out-arcs are 4-pancyclic Fulltext Access 4 Pages 2006