%0 Journal Article %A Norbert Seifter %A Vladimir I. Trofimov %T Reachability relations and the structure of transitive digraphs %J The electronic journal of combinatorics %D 2009 %V 16 %N 1 %U http://geodesic.mathdoc.fr/articles/10.37236/115/ %R 10.37236/115 %F 10_37236_115