1.
Seifter N, Trofimov VI. Reachability Relations and the Structure of Transitive Digraphs. Electron. J. Combin. [Internet]. 2009Feb.27 [cited 2026Mar.16];16(1):R26. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v16i1r26